Customers Talks: What They Asked, What They Really Meant
Every one of these started as a phone call, and every one is told the way I heard it, in my own words — Paul Lambourn, toolmaker since 1978.
| What the customer asked | What the customer meant | What that means for the professional |
|---|---|---|
| I need a box for an electronics board, a sensor and a battery. I cannot tell you what the end user does with it, but I want the mould. | He wanted a finished product, but nothing was defined about the person who uses it - so I was being asked to build a box for a job that did not exist yet. | I stop there. Wall thickness, gate position and parting line all come out of the user and where the thing lives. I ask the end-user question before anybody cuts steel. |
| Nobody wants to bend down for dog mess. Build me a tool that picks it up without bending and without touching it - there is a big market for that. | He had seen a market and nothing else: no ergonomics, no idea how the bag would seal, and no thought about what the thing looks like on a shelf next to the cheap ones. | I ask for twenty people who would pay before I draw a line. The scoop needs grip ergonomics, a bag that seals, hygiene, and a two-part tool with correct draft. Prototype first, tooling later. |
| I want a machine that cleans my swimming pool by itself. I do not know how it should work, but you can figure that out. | He wanted an automatic pool cleaner, and there was no mechanism, no power source and no budget behind it - the whole product brief was still missing. | That is product engineering, not tooling, and it starts long before a mould: motors, sealing, filters, power and pool chemistry. I test a rough prototype first; a mould alone solves nothing. |
| I need something that stops my dog barking. It has nothing to do with plastic - I just want you to build me one. | He wanted an electronic device that triggers when the dog barks, which sits right outside injection moulding. He asked me because he needed it made, not because it needed plastic. | Not a tooling job, and I tell him so. The route is electronics: sound detection, an ultrasonic or spray trigger, a battery, and a housing bought off the shelf or printed in small runs. |
| I want something that keeps my bread fresh for weeks without it going mouldy. Make it out of plastic for me. | He wanted much longer bread life, but that is about moisture, air and temperature - a sealed plastic box holds the moisture in and grows mould faster, not slower. | I give him the truth about materials: a sealed plastic box makes his problem worse. Keeping bread is a vented, breathable storage problem, not an injection job, and a prototype proves it before tooling. |
| A clip on my washing machine door hinge broke. It is a small plastic thing, I brought it in a Checkers packet. Can you make me a few? | He wanted a service replacement for a proprietary part, in small numbers, for a machine that is years out of warranty and equally far out of production. | I measure the broken piece and work out the material and the tolerances it holds. For a handful of clips, printing or machining beats a mould that costs more than the machine. |
| My competitor sells a small plastic thing that sells very well. Can you copy it exactly and make me a cheaper one? | He wanted to reverse-engineer a competitor's product and undercut it, with no idea whether the design is protected and no idea what actually makes it work. | I start with a patent search, before a dimension is measured. If it is clear, then the DfM review, the material choice and the cost per part. Copying the outside is the easy half. |
| There is an imported plastic fitting we buy at R40 each. I am sure you can mould the same thing here for R5. What is the tool going to cost? | He was comparing a landed import price with a home-made mould cost, and he had no volume, no specification and no grasp of what a tool costs or how it is paid for. | I refuse to quote on R5 a part. First the volume, then the spec. Spread the tool over the quantity and the import often wins. He gets a DfM review and a cost-per-part model. |
| I have invented a gadget in my head. It is brilliant. I have never seen a mould but I drew it on paper. When can it be in the shops? | He had an idea with no engineering behind it, no CAD model, no material, and no thought about how a two-part tool would ever let the part out of the steel. | The honest first step for an inventor is a feasibility review and a 3D printed prototype, before any tooling quote. A paper sketch cannot set draft, gates or wall thickness. |
| I want a machine to fill bottles with my sauce. Can you make me one? It is only filling and capping, nothing complicated. | He needed a filling and capping line, which is mechanical engineering and stainless fabrication, not moulding, and he had not thought about hygiene, speed or waste. | Not a tooling job. That is machine building: conveyor, pump, metering, capping head, stainless steel and food-grade seals, plus a hygiene plan. The bottle may come to me later. |
| I need a bracket to hold my solar panel on a tin roof. Make it out of plastic so that it will not rust. | He wanted a structural roof mount and assumed plastic was right because plastic does not rust - wind load, UV and roof heat had not entered the conversation. | A roof bracket carries wind load and bakes in UV and roof heat all day, so anodised aluminium beats plastic. If a plastic clip is needed at all, it must be a UV-stable grade. |
| I want something to hold my phone on the dashboard of the car. Simple and strong, nothing fancy. | He wanted a dashboard phone mount, in a crowded consumer market, with real ergonomics, visibility and heat problems sitting on a sun-baked dash. | I check what already exists, because that shelf is full. If we go ahead, fix the phone size range, the grip and the sight line, and choose a polymer that survives a hot dash. |
| The lid of my pool pump broke. It is a round plastic cap with threads on it. Can you make me a copy? | He wanted a single replacement for a threaded, pressurised, sun-exposed pump lid, and the thread was the whole job - everything else was decoration. | The thread, the seal face and the pressure rating have to match exactly, and the material has to survive chlorine and sun. For one part, machining from solid beats a mould ten times over. |
| I am starting hydroponics. I need long troughs for the plants. Can you make them out of plastic? | He wanted long, watertight growing channels, and a part that size cannot come out of a normal injection mould at a price that makes any sense. | Scale kills injection here: a metre-plus trough is an extrusion or sheet-fabrication route, not an injection tool. Short troughs can be moulded, but confirm the length and quantity first and use a food-safe grade. |
| We need a grid that fits on the braai so the meat does not fall into the coals. Metal, but make the clips plastic. | He wanted a braai accessory, mostly stainless fabrication for the grid, with small plastic clips or feet to hold it in place and lift it out. | Two trades in one job: the grid is stainless rod work, sheet metal and welding, and the clips may be a simple mould or bought off the shelf. Off-the-shelf clips usually win on cost. |
| I want to make my own dog leads with a plastic clip on the end. Can you make me the buckle part? | He wanted a leash buckle: a small, high-load snap hook that has to hold a dog under tension without ever letting go and without wearing out. | That buckle is safety-critical: constant tension and thousands of flex cycles. I choose a material with real fatigue life, design the catch and the spring-back, and prove it on a pull test rig. |
| I have an idea for something to hold a cat still at the vet. A small plastic thing. Can you make it for me? | He wanted a veterinary restraint device - safety-critical, and it has to be cleaned and disinfected between animals, which he had not thought about at all. | Medical-adjacent work brings hygiene and certification with it: a food- or medical-grade material and smooth surfaces that can be wiped down. I would prototype with a vet and watch real animal behaviour first. |
| I build model railways. I need a tiny signal box and some wheels for the wagons. A few dozen of each. | He wanted small, intricate parts for a hobby, in numbers far below anything that makes injection moulding economic, and he did not care about speed. | A few dozen parts is not a moulding job: the tool would cost more than a lifetime of parts. For railway models, printing wins: fine detail, no draft, and resin for the wheels. |
| I want a plastic trim piece for inside my car, to cover a gap where the original one fell off and got lost. | He wanted a custom interior trim that looks like the factory part, follows a curved surface, and survives sun, heat and scuffing every day. | Visible trim lives or dies on finish: the grain must match, the material must be UV-stable, and the curve has to fit that car. At low volume I print it and finish it. |
| We need a stand to hold our products on the counter. A clear plastic display thing, nothing complicated. | He wanted a retail display that is clear, branded and repeatable, and it has to stack or ship flat so that the courier does not eat the margin. | Clear parts show every flow mark, so the gate position and the wall thickness have to be designed, not guessed. I think about stacking and flat-pack shipping up front: vacuum forming suits short runs. |
| One of my table legs is shorter than the others and the table rocks. Can you make me a plastic thing to fix it? | He wanted one shim to level one table leg. That is a five-minute hardware problem, not a product and not a design job. | The honest answer is no. A table-leg shim or an adjustable foot from the hardware shop fixes it this afternoon. Quoting a mould would be dishonest, so I point him to the off-the-shelf fix. |
| I need a small plastic latch for a toolbox so the lid stays shut. Make me the mould for it. | He wanted a mechanical latch with real spring-back, correct catch geometry, and a long open-and-close life in a dusty workshop where nobody oils anything. | A latch is catch geometry plus spring-back plus a material with fatigue life, and it needs a test that proves thousands of cycles. At low volume I print prototypes first. |
| I want a plastic hinge so the lid of my storage box opens and closes smoothly. I need a few thousand. | He wanted a hinge that survives repeated movement, and how long it lasts is decided by the geometry and by the fatigue life of the material, not by the price. | A hinge is a fatigue job: a living hinge needs the right resin, a thin section and a gate that lets it flex millions of times. A flex test rig proves it. |
| I want a small device I can carry that measures something and shows it on a screen. The plastic case is yours to make. | He wanted a portable instrument: electronics, display, battery and a sealed case - a whole product, not a shell to wrap around a board. | The case is the easy part. The real work is the electronics, the display and battery choice, sealing and drop resistance, and certification if it measures anything regulated. Electronics and enclosure get designed together. |
| I want a big sign for my shop front with my business name cut out of it. The letters cut into the metal. | He wanted a shop sign, and letters cut out of metal is laser or waterjet work - there was never a mould anywhere in that conversation. | This is a laser-cutting job, not tooling. I prepare a vector file of the lettering, agree the plate thickness and the finish, then cut it. I quote from material and cutting time. |
| I need a metal cabinet to keep my tools locked up in the workshop. A plain one, about 900 mm high. | He wanted a fabricated metal enclosure - sheet-metal design and fabrication, not plastic - with real decisions about gauge, hinges and the lock. | Not a moulding job at all. That cabinet is sheet-metal fabrication: the gauge, the folds, the hinges and the lock. I supply a SolidWorks flat-pattern model and quote from material plus press time. |
| I need a 5 litre container for my cooking oil, with a handle and a screw cap. Make me the mould - it is only a bottle. | He wanted a blow-moulded bottle, not an injected part: a hollow container with a handle cannot come out of an injection tool at that size for that money. | This is extrusion blow moulding, not injection. A tube drops between the two tool halves and is blown out to the wall. The die head sets the wall thickness, and it must stay even. |
| We want to bottle our own sparkling water here. Two litre bottles, thousands a week. Can you make the bottle for us? | He wanted his own branded 2 litre carbonated bottle, which is not injection moulding at all - it is a small preform and a stretch-blow machine. | The route is: buy or mould a PET preform, then stretch and blow it into the bottle mould at the right temperature. The neck finish and the material grade decide whether it holds gas. |
| Our club needs a bronze plaque for the clubhouse wall. Something cast, with our name and the date on it. Can you do it? | He wanted a cast bronze plaque, which is foundry work - a pattern, a mould and a pour - and nothing that comes off an injection machine. | That is a foundry job: a pattern, a mould and a pour. I make the pattern with the lettering and the draft, allow for shrinkage, then cast it in sand or lost wax. |
| The pump housing on my irrigation pump cracked. The agent wants three months and a fortune. I brought it in the bakkie - can you cast me one? | He wanted one cast metal housing, quickly and cheaply, for an old pump that the agent no longer cares about and no longer stocks. | That is gravity die casting territory: a metal die, a core for the bore, aluminium poured in with a shrinkage allowance, and the seal faces machined afterwards. |
| I want to make water tanks for the farms around here. Plastic ones, about 5000 litres. Can you make me the tool for that? | He wanted large hollow tanks in modest numbers - a part no injection mould on earth makes economically, which nobody had told him. | Not the job he imagined. Large hollow tanks are rotational moulding: a cheap sheet steel or aluminium mould, powder inside, the part formed while the mould turns. Flat panels would be vacuum formed instead. |
| He said to me: ek wil net 'n ding hê wat werk - I just want a thing that works. No drawings, no report, just the part. | He did not want a design package or a folder of paperwork. He wanted a part running on his machine by Friday, because his own customers were standing at his counter waiting. | So I ran it as spuitgiet (injection moulding): a two-part tool, the gate where it trims clean, hardened ejection pins, and enough draft that the part drops out by itself. |
| Since the load-shedding we sell lamps like bread. I want my own rechargeable lamp shape. Plastic housing, and it must shine far. | He wanted a lamp he could sell under his own name, and he had not separated the plastic housing from the electronics that actually decide how far it shines. | The housing is the part I can do: ABS, a two-part tool with the split line under a rib, and a living hinge for the battery door. The electronics go to a lamp engineer. |
| Our club hands out badges at the prize-giving. Small plastic badges with the club name on them for the children. I need them now-now, before the school holiday. | He wanted a few dozen badges in a hurry, and he assumed plastic always means a mould - the deadline was driving him, not the quantity. | Not a moulding job at that number and that deadline. Sixty badges is laser-cut acrylic or printed composite, cut this week. A mould would eat his budget and three weeks of his calendar. |
| We need a lid for our 20 litre bucket, fifty thousand a month. It has to seal and it must not crack when they stack them four high. | He wanted a sealed lid that survives stacking and thousands of opening cycles, at a part cost that only a properly cooled tool can deliver. | That is a real injection job: PP, a gasket groove, a hot runner to kill the runner scrap, and cooling designed around the seal. Fifty thousand a month pays for good steel. |
| I have an idea for a gate latch that a small child cannot reach and cannot work open. I think it is worth a patent. Can you develop it? | He wanted a mechanism nobody else has, protected if it really is new - so the work had to start with a patent search, not with a drawing. | First a patent search on the existing latch art, then a working mechanism: springs, tolerances, wear and the child-safety test. I print it and we test it on a real gate. |
| My old toolmaker used P20 and it was fine. Now the corners of the tool are cracking and he says it is my plastic. Can you look at it? | He had run hundreds of thousands of parts off a tired tool, welded twice, and the sharp inside corner was where it was always going to split. | I measured the corner, read the drawing, and put it down to the radius: 0.2 mm inside a P20 block cracks. Fix it with 1.2344, a bigger radius and stress relieving after welding. |
| The first batch came out dull, now the new ones have a shine on them and my customer says they look cheap. Nothing changed on my side. | He was sure the resin had changed, but a glossy skin comes off the tool, and someone had been polishing the cavity and spraying release agent to make the parts drop faster. | The texture lives in the steel: grain, gloss level and Ra are fixed on the drawing. I polish with diamond paste to that finish and take the release spray out of the cycle. |
| A crack went through one cavity on Friday afternoon. The moulder needs the tool on Monday morning or he loses the whole week. Can you do anything? | He needed one cavity insert replaced, in a tool that was already closed and in production, over a weekend with load-shedding in between - and a pattern that he could run on Monday. | That is a boer maak 'n plan weekend: machine the insert blank, grind the faces flat, spot it against the cavity with blueing, hand fit the shut-off. The burn waits for the generator. |
| The assembler says half the parts are out and they do not fit. Nothing changed here. Can you check the mould, or is it their machine that is wrong? | He was being pushed by his customer and had nothing to measure with. What he needed first was thirty parts measured properly against the drawing, not a mould opened on a hunch. | I measure on the granite with a micrometer and a height gauge, then compare the parts to the CMM report. That day the fault was a revision number on the drawing, not the tool. |
| My moulder has my tool and says I owe him money, so he will not release it. I never signed anything saying the tool is his. What can I do? | He was in a fight over a tool he had already paid for, and he had no deposit slip, no written ownership clause and no photographs of the tool. | Honest answer: that is a lawyer's letter, not a machinist's. In my book the vorms, the moulds, belong to the man who paid, so the ownership clause and the deposit go into every quotation. |
| These aluminium brackets go on boats at the coast and the sea eats them in one season. Can you dip them in something so they stay silver? | He wanted a bare aluminium part to look untouched after a year at sea, and he thought a dip was a paint job, not a coating that grows and moves the size. | Anodising is the right route, and it is an anodiser's job, not mine. But the drawing must allow for it: the oxide grows the part and a thread will not go on afterwards. |
| The parts are flashing all over and my operator blames the tool. He runs it in the back on the old machine. What now? | He had skipped the trial and gone straight into production, so nobody knew whether the tool, the tired machine or the settings made the flash - and he wanted me to pay for it. | I book a T1 trial on his machine, on his own material and settings, and run it as the tool was designed. Ten minutes showed a tired clamp and too much holding pressure. |
| We want to pack our own yoghurt, 200 ml cups, about half a million a month. Can you make us the cup and the lid? | He was not selling a machine or a part, he was selling packaging: a container that runs at speed, weighs a few grams and carries his own brand. | Thin-wall PP at 0.5 mm, a hot runner so there is no runner to trim, and in-mould labelling. The tool steel and the cooling decide whether that cup cycles fast enough to pay. |
| "Die koper ring moet in die plastiek," he said - the brass thread must sit inside the plastic knob and not turn or pull out when he tightens it. | He wanted a metal thread inside a moulded knob, in modest numbers, and the real question was whether the plastic could hold it without splitting. | Insert moulding: the brass is loaded into the tool and the plastic is shot around it. Heated inserts, enough wall around the metal, and a torque test. Otherwise the boss cracks. |
| I buy cable glands by the box for my panels and the plastic nut cracks under the spanner, then the whole thing leaks. Make me a better one. | He wanted a sealing part that survives a spanner and a panel standing in the rain, and he was buying on price instead of thread form and material. | UV-stable PA66 or a glass-filled grade, the thread form checked against his conduit, and a torque test until the nut stops splitting. The gasket has to hold IP68 outdoors. Batches of 5,000. |
| My own brand of garden trowel. I want that soft rubber grip on the handle, the one that does not hurt your hand when you pull. | He wanted comfort in the hand, and comfort is two materials: a hard core that carries the load and a soft skin that still grips when the hand is wet. | Two-shot moulding: a PP core and a TPE skin, where the bond has to be chemical or the skin peels off in the sun. I test the peel before anybody quotes the tool. |
| The clamp I buy for my water lines keeps getting rejected at the mine gate. They say it has no certificate. Can you make me one that they will accept? | He was selling into a mine, and the gate wanted paperwork, not just a good part: a fire-rated material, a batch number and a test certificate for every run. | So the material is chosen first: a flame-retardant grade with a datasheet, moulded under a batch number that stays with the parts. Then a flame test and a certificate per run. |
| The vorms for my bread crates were cut by another man in 2009. They crack now and the parts come out with flash. Can you fix them? | He wanted an old tool brought back to life before anyone spent money on a new one, and he had no idea whether the steel was still sound underneath. | Strip it, measure the cracking, weld-repair the cavity, re-polish the faces and replace the ejector pins and guide pillars. Then a trial run. I report before I cut. |
| I want a plastic water pistol for the shops, cheap, and a thousand by the end of the month before the school holidays. Can you do it? | He wanted a toy, and a toy carries tests with it: sharp edges, small parts, projectile force and colourants, none of which were in his price. | Toy work means EN 71: no sharp edges, no small part a child can swallow, a weak trigger spring and a safe colourant. The test report is paid for before the tool. |
| I am building four townhouses and every one needs a small distribution box on the wall. Grey plastic, with a clear door. Can you make me the mould? | He wanted a domestic DB enclosure, a live electrical product: the size comes from the breaker layout and the creepage distances inside, and the grey plastic must take the sun. | I size the box off his breaker layout, choose a UV-stable ABS or polycarbonate for the sun, and set the cable entries before steel. The clear door is its own tool in PC. |
| We service old switchgear and the plastic shroud over the contacts is discontinued. The agent wants the whole panel replaced. Can you make the shroud? | He wanted a service part to keep forty-year-old switchgear alive, where the new part must fit the old panel exactly and not compromise the clearance the original design relied on. | I measure the old shroud and check the creepage and clearance distances before anything else. Then a glass-filled polyester, because it must not track. The panel stays; only the worn part goes. |
| I build control panels and I buy these terminal blocks from overseas. The lead time is killing me. Can you mould me my own terminal blocks? | He wanted to replace a catalogue electrical component with his own moulding, without realising a terminal block carries standards, current ratings and a screw interface. | I asked for the current rating and the standard his panels are certified to. A terminal block is a certified part; tooling a look-alike voids the panel certificate. We found a local agent instead. |
| The housing on my pool chlorinator cell cracked where the salt water runs through. The agent wants R6 000 for the whole cell. Can you mould just the housing? | He wanted only the cracked housing off an expensive chlorinator cell, and the part sits in salt water and chlorine at the same time, which rules out half the plastics on the shelf. | The first one I machined from solid in the right polymer to prove the fit, because one part never pays for steel. A mould only makes sense if the shops buy housings all year. |
| My pool filter valve is cracked and they do not make that model any more. It is a round black thing with six positions. Can you copy it? | He wanted a copy of a discontinued multiport valve body: six internal ports, a sealed diverter, and water at pressure - the ports inside are the product, not the outside shape. | I told him straight: the outside is easy, the six ports and the sealing faces inside are the job, and they must not leak. We measured his valve and quoted a machined prototype first. |
| I fit pools for a living and I want my own brand of aimflow fittings and weir eyes. White, with my name moulded in. What would that cost me? | He wanted his own name on pool fittings he already buys, which means the tool must carry the branding and the price per part must beat the catalogue he uses today. | Two simple tools in UV-stable white polypropylene, with the name moulded into the flange. I quoted him on quantity first, because at five hundred fittings a year the mould never pays for itself. |
| The extraction over my wife's stove ends in a hole in the wall. I want proper round ducting and a cowl outside, in aluminium. Can you make it? | He wanted a domestic extraction duct and cowl in sheet aluminium, one of each, which is a rolling and folding job from flat sheet, not a product and not a mould. | One-off ducting is rolling machine and bench work: develop the flat, roll the cylinder, rivet the seams, and the cowl gets a weather flap. I quoted him for a morning in the shop, honestly. |
| We need two hundred galvanised brackets to hold conduit on the new workshop wall. A simple L shape with two holes. Can you bend them for me? | He wanted a plain L bracket in numbers, and the whole job is one press-brake program: flat pattern, hole positions, bend allowance, and a finish that survives outside. | I drew the flat pattern in SolidWorks, let the software work the bend allowance, and punched the holes before folding. Two hundred brackets took an afternoon. Galvanised sheet, no paint needed. |
| Our overseas head office sent me a STEP file of a new part and said make it here. There is no drawing. Can you work from the file? | He had a 3D model with nothing called out: no tolerances, no material, no critical faces marked, and a workshop that machines to numbers on paper, not to a picture on a screen. | I opened the file, measured the faces in SolidWorks and drew the drawing myself: material, tolerances, critical faces, datums. We agreed the drawing with head office before a chip was cut. |
| I want a soap dispenser shaped like a river stone. Smooth, no lines anywhere. My designer gave me a picture. Can you make the shape? | He wanted a freeform organic shape with no visible split line, and a photo of a stone is not a surface: somebody has to build that geometry face by face. | That is surfacing work in SolidWorks: I built the shape as lofts and fillets, placed the split line under the base where the eye never goes, and printed the shape for him to approve. |
| I need a steel frame for a camping-trailer roof rack. Tubes, welded, that must fold flat. Can you design it and make the drawing for the welder? | He wanted a welded tube frame that folds, which is a structure that must carry load on a corrugated road, and a welder who needs a drawing, not a conversation over the bench. | In SolidWorks weldments: standard tube profiles, the joints cut in the model, cut lists the welder can work from, and the folding hinge designed so it actually clears when it closes. |
| My feeding troughs come in three lengths and every size is a separate drawing. My agent keeps getting them mixed up. Is there a tidier way? | He wanted one product in three sizes without three sets of drawings going wrong, and nobody had told him that one model can carry all of its sizes inside itself. | One SolidWorks model with configurations: the length drives itself, the drawings follow the size, and the wrong one cannot reach the workshop. I set his parts list up the same way. |
| My customer says the new housing must not warp or he sends it back. Can you check on the computer before you cut the steel? I cannot afford a second tool. | He wanted certainty before the money went into steel, which is exactly what a fill and warp study is for, and exactly what a thin quote makes a toolmaker skip. | I ran the fill and warp study first: the sink marks sat behind a thick rib, so we cored it out before cutting. The study cost a day; a second tool costs a month. |
| The German supplier sent us an IGES file of the mating part and nothing lines up. Our part is out by two millimetres. Whose model is wrong? | He had two companies blaming each other across a translated file, and IGES loses faces and surfaces in translation, so both models can be right and the transfer wrong. | I imported both files into one assembly, checked the faces, and asked for native STEP instead of IGES. The two-millimetre error was a shifted datum in the translation, not a machining fault. |
| A surgeon I know wants a better handle for his laparoscopic instruments. The grips hurt his hands in long operations. Can you make one? | He wanted a surgical handle: comfort for a surgeon over hours, a material that goes through an autoclave every day, and a design that cannot fail while it is in a patient. | I sat with the surgeon and modelled the grip to his hand. Then the hard part: autoclave cycles at 134 degrees rule out ordinary plastics, and every radius gets polished so nothing hides. |
| Our theatre Sister wants trays that hold the instruments for sterilisation, with cut-outs shaped to each tool. Fifty trays. Plastic, obviously? | She wanted instrument trays that survive an autoclave for years, hold each tool steady so the tips do not touch, and drain and dry - which is a design job, not a shopping item. | Most plastics die in an autoclave, so the shortlist is PP or PPSU, and PPSU wins for the cycles. Machined for the trial set, and the mould comes when the layout is proven. |
| Why does a mould take ten weeks? I can get a phone from China in five days. Surely a box of steel is quicker than a phone? | He was comparing a factory line in China with one man cutting hardened steel in his own shop, and he honestly did not know what happens inside those ten weeks. | I walked him through it: design, steel delivery, roughing, heat treatment, electrodes, polishing, trials. Every step waits for the one before. I do not quote fast dates to win work; I quote true ones. |
| My moulds sit at three different moulders around town and nobody can tell me where the one I need is this week. Can you store them properly? | He had paid for tools scattered across shops, with no register, no condition reports and no insurance, and his production was hostage to whoever held the steel that week. | I said yes, and meant it: every tool gets a number, a condition report with photographs, a rack location and an insurance value on paper. He brings each one in when its job ends. |
| Another toolroom quoted me half your price for the same tool. Same drawing, same plastic. Why should I pay you double for the same steel? | He wanted the same tool for half the money, and nobody had shown him where the cheap quote saves: steel grade, cooling, polishing, trials, and the man who answers when it cracks. | I asked to see their tool drawing. No cooling layout, no steel certificate, no polishing callout. I told him the truth: buy cheap once and you pay twice, on his machine, at his cost. |
| We need a stainless cabinet for the pump house at the mine. It stands outside in the rain and the certificate people will inspect it. Can you build it? | He wanted an outdoor stainless enclosure for electrical gear, with the ingress rating and the inspection decided before the first sheet is cut, not argued about afterwards. | I designed it around the IP rating: folded doors with a full-length drip lip, a gland plate underneath, a rain hood on top, and the material certificate with the delivery. |
| My garden lights connect with a plug that rusts green by the second summer. I want a sealed connector that just clicks together and never lets water in. | He wanted a garden-light connector that stays sealed for years in soil and sun, which is an electrical contact problem wearing a plastic jacket, not just a moulded shell. | The contacts are bought, the shell is moulded around them: two halves in UV-stable material with an O-ring groove and a latch that clicks. A sample spent a week in a bucket of water. |
| My pool pump impeller cracked where it fits on the motor shaft. The agent only sells the whole wet end now. One impeller, that is all I need. | He wanted one impeller off a machine the agent had discontinued, and an impeller is a spinning part: balance, blade shape and the shaft fit all decide whether the pump still pumps. | I printed one in a filled material and we tried it, because balance and the shaft taper had to be right. The trial proved the shape; a moulded impeller goes in for keeps. |
| We build switchboards and need white standoffs holding the busbars off the plate. Thousands a year. The imported ones crack when the electrician tightens them. | He wanted an insulating standoff that survives an over-torqued spanner, in numbers that justify a tool, and the cracking was a material problem pretending to be a design one. | Glass-filled polyester or BMC, so it cannot track or crack under torque. A boss with a metal sleeve inside, a torque test, and the tool pays for itself in a year at his numbers. |
| I only have two photographs of my father's old fishing lure mould from the fifties. The mould itself is gone. Can you build the shape again from photos? | He wanted a lost shape rebuilt from two photographs, which is reverse engineering by eye: the photos carry no scale, no draft and no gate, and memory will fill in the rest. | I told him what photos can and cannot give: the outline yes, the depths only by proportion. We built the model in SolidWorks, printed a test lure, and the family agreed the shape. |
| My customer changed the product halfway through cutting my tool. Now he wants to know why the date moved. Can you explain that to him, or must I? | He was carrying an engineering change ordered halfway through cutting steel, and the change was real work: new electrodes, re-cut faces, a new ejector, and a fresh trial. | I put it in writing, one page: what changed, what it costs in hours, when the tool runs again. Nobody argues with a signed change note and a new date. |
| I want to put lights in my pool so we can swim at night. The pool shop wants a fortune for the fitted ones. Can you make me the light fitting? | He wanted underwater lighting, and an underwater fitting is sealed against the water on one side and people on the other - the price he was quoted carries that, not greed. | Under water the seal, the cord entry and the lens are the product: potting done to IP68, properly, on low-voltage power. I prototype the seal first; buy the certified lamp to go inside it. |
| The niche that holds my pool light behind the wall is leaking. It is a plastic pot with a back entry for the cable. Can you mould me one? | He wanted the sealed pot that sits under the waterline with the cable entering the back, and he had not thought about what constant water pressure does to a joint. | A leaking pot is usually a flattened gasket or a wicking cable, not the pot. I would pressure-test his first and re-seal it wet; a new moulding is the last resort. |
| I need the little eyeball fittings that aim the water back into the pool. They break all the time. Can you make them cheaper than the import? | He saw a huge market in a fitting that costs a few rand, and he did not know that a cheap part needs a cheap tool run fast, or there is nothing left in it. | High volume, at least two cavities, a cycle under ten seconds, and a family tool for the sizes. First the maths: at that price you live or die on cycle time. |
| The flap in my weir that stops the leaves floating back out is gone. It is a flat plastic door on a pin. Can you make me a copy? | He wanted one moulded flap for a weir that every pool builder in the country has fitted, and he did not know the part is standard and sells for pocket money. | I check the standard sizes first, because a weir flap is a catalogue part. If his weir is truly odd, a pin hinge and a flap weighted to hang true is simple work. |
| Boys kick the button on my gate motor box to pieces. I want one made of rubber or something they cannot break. Can you make it? | He wanted a vandal-proof actuator, and the real want was not the button but the housing around it, because any button breaks if the mounting lets it lever. | A soft TPE button over a stiff carrier, sealed against the rain, with the kicking load taken by the housing and not the button. I design the two parts together. |
| Our panels need plastic shrouds over the busbars so nobody touches a live bar. Flat covers with clips. Can you quote on them? | He wanted phase barriers inside his distribution boards, and he did not know that flame retardance and tracking resistance decide the material long before price does. | Flame-retardant grade with a tracking index, clip features that hold on a hot bar, and a datasheet with every batch. Safety covers get paperwork, not just a moulding. |
| I fit prepaid meters and the little plastic window over the display always goes yellow and cracks in the sun. Can you make a better cover? | He wanted a transparent cover that stays clear on a north wall for years, and the yellowing told me the imported part was never a UV-stable material at all. | UV-stabilised polycarbonate, a hardened surface if it gets wiped daily, and a frame that allows for the meter underneath. Then samples go on the wall for a year. |
| My trailer plug shells keep cracking where the cable enters. The pins are fine, it is the plastic body. Can you mould me a tougher one? | He wanted a connector shell that survives being yanked off the towbar and driven over, and he was buying the cheapest shell on the shelf and fitting the best cable. | An impact or glass-filled body with a proper strain relief, a gasket that keeps water out of the pins, and the pin carrier moulded square. The shell fails because it carries the load. |
| The ducting over my kitchen extraction must be metal, my fitter says. Can you make sheet metal ducts and a canopy collar for a takeaway? | He needed bent and welded sheet metal over a hot, greasy extraction, and he had come to a toolmaker because nobody else would take a small job like that seriously. | For a takeaway the canopy is the job: grease filters, a fire-rated build, stainless throughout, and a collar that actually fits his duct. That is my sheet-metal side. |
| I need stainless brackets for shelving in a cold room. Maybe sixty, all the same. Is that too small a job for you? | He wanted a batch of folded stainless brackets, and he was apologising for the size of the order before he had even asked the price. | Laser and press brake, no tooling at all, so sixty is a small batch. The real question is the grade: 304 for dry shelves, 316 where the cleaning chemicals splash. |
| My switchboard doors need vents. I wanted plastic grilles stuck on, but my inspector wants pressed louvres in the door. What is right? | He wanted ventilation without losing the rating of his board, and he had two answers from two people and no idea which one carries the paperwork. | Pressed louvres in the door keep the rating honest and the panel stiff; stick-on grilles cheapen it and let the dust in. I press them into my own cabinet doors every week. |
| I have a STEP file of a bracket from my designer overseas. Can you quote straight off that and cut the tool without more drawings? | He wanted a tool cut from a bare 3D file, with no tolerances, no material call-up and nobody responsible when the part does not fit its neighbour. | A quotation off a bare file is a guess, so I quote what I can see and list the rest: tolerances, material, cavity count. His drawing can still move the price by half. |
| I want a trolley frame in square tube for my workshop, five hundred a year. My nephew drew it in SOLIDWORKS. Can you work off that? | He had a frame modelled as solid lumps instead of a weldment, so there was no cut list, no lengths and no jig positions, and his nephew is not coming back. | I rebuild it as a weldment and design the jig with it: corner gaps, clamp points, a layout the welder can build five frames on without measuring twice. The model is the start. |
| My bottle caps come in four sizes that are the same shape. Four tools is too much money. Can one tool make all four sizes? | He wanted a family of caps from one tool, and he did not know that changeable inserts or a sliding core can buy the range, or what each option costs in cycle time. | One tool with changeable inserts for the four diameters, a common core and a common thread form. Configurations in SOLIDWORKS first, so he sees all four parts before steel. |
| Our design office closed and all I have is a STEP file that opens with holes in the surfaces. Can you rebuild it and cut the tool? | He had inherited dying data: a translated file with torn faces, and the man who could answer questions about the shape has retired or emigrated. | I import it, find the bad edges, and rebuild the surfaces in SOLIDWORKS until the solid closes watertight. He gets renders to approve before anything is measured for steel. |
| We need a new housing for a surgical bone drill. Small, light, and it must go through sterilising every day. Can you do medical work? | He needed a handpiece shell that survives autoclave after autoclave, stays sealed around a motor inside, and carries a grade number a hospital auditor will ask for. | Medical grade material with a datasheet, sealing that takes steam cycles, grippy surfaces with no dirt traps, and batch traceability. I have done theatre work; the paperwork is half the job. |
| We need cases to hold our instrument sets in the steriliser. The metal trays cost a fortune. Can plastic survive that heat and pressure? | He wanted a sterilisation case instead of steel trays, and he had never costed what a steel tray loses over hundreds of autoclave cycles: dents, re-tagging, rust at the hinges. | The price is in the cycles, not the case: steel dents, re-tags and rusts at the hinges, a PPSU case outlives them all. I costed both over five years before he signed. |
| I make biltong for the butchery. I want my own dryer: plastic trays and a housing for the fan and the bulb. Is that a moulding job? | He wanted a dryer built around warm air, a bulb and meat juices, and he had not separated the machine from the moulded trays and housing inside it. | The machine is fan, heat and airflow, and that is fabrication. The trays and the housing are mine: food-safe material, easy to wash, no dirt corners, and trays that stack square. |
| I want a housing for a camera on my farm to watch the water trough. It must sit in the sun and rain for a year without trouble. | He wanted a weather housing for a trail camera on a fence post, and the real brief was sun, rain, dust, a battery that lasts and a strap that holds against baboons. | A gasketed shell in UV-stable material, a window that does not reflect at night, a strap channel and a lock tab. I prototype in 3D print first, then we talk tooling. |
| Your quotation took a week and the tool takes four months. Why can everything not move as fast as the quote? | He wanted his job to jump the queue, and he did not know the shop runs on booked machine hours, not on how loudly a job is wanted. | A tool is weeks of booked machine time ahead of his, and the honest queue is the fair queue. Deposit first, his slot on the wall, the same as everyone else's. |
| I will pay you when the tool makes good parts, not before. That is how I buy everything. Why do you want money up front? | He was not being difficult. He had just never bought a tool before, and nobody had told him the steel, the electrodes and weeks of machining are all spent before one part exists. | I explain the deposit the way I explain everything: it buys the steel and the first weeks, it sits in the quotation, and the vorms belong to him the day they are paid off. |
| Before I show you my idea you must sign my NDA. I have a patent attorney and I do not want it stolen. Is that a problem for you? | He wanted protection before disclosure, which is fair, and he feared the workshop floor more than the market, which is the wrong way around. | I sign NDAs every month and it protects him as much as me. But the real protection is the patent filed first and a toolmaker who would rather build than steal. |
| My seun wants to become a toolmaker like you. Where does he start, university or the workshop floor? Nobody at his school could tell me. | He wanted a route for his son into a trade that schools no longer explain, and he was asking the right man, because this trade is learned standing at a machine. | Start on the floor: an apprenticeship, night classes for the certificate, and SOLIDWORKS at home. Tell him to visit a toolroom first and see if the smell of the place hooks him. |
| Can I buy a hundred parts off you before I commit to the tool? My shop wants proof it will sell before I spend money on steel. | He wanted proof it sells before he pays for steel, which is the right instinct, and he did not know there is a proper route for exactly that. | Machined in the real material, or printed as a close stand-in, finished to look like production. A hundred sets is a normal trial batch. If they sell, the tool follows with data behind it. |
| I need my tool running before October so my stock is on the shelf for December. I will pay extra for overtime. Can you promise a date? | He wanted a date in writing for a Christmas window, and he had not yet heard that a tool gives its real date only after design, steel and the first trial. | I promise a date only with a plan behind it: design weeks, steel delivery, cutting, trial and corrections. Pay for the parallel work and we chase it, but no promise without the plan. |
Conversations listed