Obsolete machine parts, remade

The situation this page is about

A machine that works perfectly well stops because one plastic component has failed. The component is not sold. The manufacturer has moved on, or folded, or wants a minimum order of five hundred, or has quoted a lead time that outlasts the job the machine was bought for.

The alternatives on the table are usually bad: leave the machine down, improvise something that will fail again in a fortnight, or replace an entire working machine because of one part. Remaking the part is the option that keeps the asset.

This page is specifically about equipment — production machinery, workshop tools, plant, laboratory and commercial equipment. If the part is a household or consumer item, our replacement parts page covers that ground and is the better starting point.

Why downtime changes the calculation

The cost of an obsolete part is almost never the cost of the part. It is the cost of the machine not running, and that number is usually much larger and much less patient.

This is why speed matters more here than on almost any other job. Same-day quoting, a prototype on the printer quickly, and a finished part in days is the point of the service. Where a part is needed faster than standard turnaround, say so at the enquiry rather than after — priority scheduling can often be arranged.

It is also worth remaking a part before it fails. If a component has already failed once and you know it will again, having the model already made turns the next failure from a shutdown into a phone call. The measuring is the slow part, and it only has to happen once.

How the job runs

The process is the same as any reverse engineering job: measure the original by hand, model it from those measurements, print a prototype, fit it to the machine, adjust, then print the final part. Where the original is broken, send all the pieces — a clean break often makes internal features easier to measure.

Two things speed this up considerably. First, photograph any moulded part number, logo or casting mark before sending. It occasionally identifies the original manufacturer or an equivalent part still on sale, which is cheaper and faster than anything we can print. Second, say what the part does — what it holds, what it slides against, what it is exposed to. That decides the material and the print orientation, and it is the single most useful sentence in an enquiry.

The honest limits

These matter more on equipment than anywhere else, because the failure mode is a machine, not a household object.

Heat. PLA, PETG and flexible TPU are the materials used here. None of them belongs near sustained high temperature. Anything close to a motor running hot, an oven, an exhaust or a heating element is outside what this process should be asked to do.

Load and safety. Everyday and moderate loads are ordinary work — brackets, covers, guides, housings, light drive components. What should not be a printed part is anything whose failure is dangerous: structural members carrying heavy sustained load, anything holding a guard in place, anything whose failure could injure somebody, and anything a compliance or insurance obligation attaches to. That is a firm line and you will be told when a job crosses it, rather than after.

Chemicals and liquids. Printed parts are not watertight by default, and solvents and fuels affect these materials. A part that has to seal needs designing around a bought seal, and a part exposed to chemicals needs a conversation before anything is printed.

Wear surfaces. A printed part sliding under constant contact wears faster than the metal original. That is not automatically a problem. Where a component is effectively consumable, a part that costs little and can be reprinted from a kept model on a day's notice is often a better arrangement than one that lasted longer and can no longer be bought at all. Where the part has to hold its geometry for years, it is not. Which one you have depends on your machine, so you get the honest version and make the call.

Who this suits

Businesses with equipment they intend to keep. Maintenance and facilities teams, workshops, small manufacturers, anyone whose machine is worth more than the part that stopped it. Repeat work is common and welcome — once a machine's awkward parts have been measured, the models exist.

Minimum order is $75. That is deliberately stated: if the part is a two-dollar clip on something you were replacing anyway, this is not the right service and it is cheaper for both of us to know that now.

Frequently asked questions

How fast can you turn a part around?

Standard turnaround depends on the job, and quoting is usually same-day. Where a machine is down, say so in the enquiry — priority scheduling, including next-day and same-day collection in Geelong, can often be arranged. The modelling is normally the longer half, so a simple part moves considerably faster than a complex one.

The part is completely destroyed. Is it still possible?

Often, if you have the pieces or a matching part elsewhere on the machine. Send everything, including fragments. Where the geometry genuinely cannot be recovered, you will be told that rather than sold an approximation.

Can you print a part that is currently under load in a machine?

It depends entirely on the load and what happens if it fails. Light-duty covers, brackets, guides, spacers and housings are routine. Structural or safety-related components are not, and that will be said plainly rather than hedged.

Can you hold a spare in reserve for us?

The model is kept once it exists, so a reorder is a print rather than a fresh job. Many customers have one printed to sit on the shelf, which is usually the cheapest insurance available against the same failure happening again.

Will it last as long as the original?

Probably not, if the original was metal or an engineering polymer. It will usually last long enough to matter, and it can be reprinted cheaply. Where a printed part is the wrong answer for the duty, you will be told.