3D Printed Spare Parts
The manufacturer stopped selling the part years ago, the whole appliance is otherwise fine, and one broken bracket or knob is standing between you and throwing it away
This happens more often than most people expect: a plastic clip snaps, a mounting bracket cracks, a knob wears through — and the part isn't sold separately, or the manufacturer stopped stocking it a decade ago. The appliance, the furniture, the machine is otherwise fine. Replacing the whole thing over one small part is a waste.
The fix is to measure the broken part, model it as a 3D file, and print a new one in a material suited to how it's actually used. This page covers what kinds of parts reproduce well, how the process runs from broken piece to finished replacement, which material fits which situation, and what it costs.
What Can Be Reproduced
Not every broken part is a good candidate for 3D printing. The technology is excellent at some shapes and functions, and a poor fit for others. Being upfront about this saves everyone a wasted quote.
Works Well
Good candidatesBrackets, mounting holders, knobs and handles, covers and panels, small enclosures, clips and latches. These are typically low-to-moderate load, room-temperature or mildly warm, and geometrically simple enough to measure accurately from the broken pieces.
Poor Fit
Assess case by caseParts that run hotter than about 80 °C in use, anything in direct food contact, optical or fully transparent components, and safety-critical parts under high mechanical load. We'll say so honestly rather than print something that won't hold up.
The distinction usually comes down to two things: how hot the part gets while the appliance is running, and how much force it carries. A printed bracket holding a light shelf is a straightforward job. A gear inside a power tool transmitting real torque is a different conversation — sometimes printing still works with the right material and wall thickness, sometimes it doesn't, and we'll tell you which before you pay for anything.
Geometry matters too, separately from load and heat. FDM printing builds a part layer by layer, so it's naturally suited to the kind of shapes that make up most household and appliance hardware — brackets, ribs, bosses, snap-fit tabs, cable clips. Deep undercuts, fully enclosed cavities and razor-thin walls under about a millimeter are harder to print cleanly and may need the design adjusted slightly from the original, which we'll flag during modeling rather than after the print is done.
How It Works: From Broken Part to Replacement
The process is the same whether the part is a small clip or a custom enclosure panel — only the time and material change.
3D printing has real dimensional tolerances — typically within a few tenths of a millimeter on FDM prints — which is tight enough for most brackets, covers and holders, but worth knowing about if the part slots into a precise mechanical fit. That's exactly why the fit-check step exists: better to catch a tight tolerance on the first print than to assume it's perfect and mail it out uncorrected.
Sending the physical part by mail or bringing it in person, rather than just a photo, produces the most accurate model — a caliper measurement beats an estimate from a picture every time, especially for anything with curved or interlocking geometry.
If only fragments of the broken part survive, that's usually still enough. A snapped bracket often breaks cleanly along a stress line, and the two halves together give the full outline; a worn-through knob can be measured against the shaft or spindle it fits onto. What's harder to work from is a part that's missing entirely with no photo of the original in place — in that case we'll ask for the surrounding fixture or housing it mounted into, so the replacement is built to fit the actual mounting points rather than a guess.
Choosing the Material
The original part was almost certainly injection-molded, which uses different plastics than a desktop 3D printer does. That's fine — the goal isn't to match the original material exactly, it's to match the original's function, and often a printed part in the right material for the job outperforms the part it's replacing.
PLA
Rigid and dimensionally accurate, ideal for indoor brackets, covers and decorative or lightly loaded parts. Softens at moderate heat, so it's not the choice for anything near a radiator, engine bay or appliance motor housing.
PETG
Tougher than PLA and noticeably more resistant to moisture and moderate heat, which makes it the default for parts exposed outdoors, in a bathroom, or near — but not directly on — a heat source.
TPU
A flexible, rubber-like filament for parts that need to bend, grip or seal — cable grommets, gaskets, bumpers, non-slip feet — where a rigid replacement in PLA or PETG simply wouldn't do the job.
Picking wrong is the most common reason a printed replacement disappoints: a PLA bracket in direct summer sun, or a PETG part where TPU's flex was actually the point. We ask about the operating environment before quoting so the material matches the job, not just the shape. For the full picture on strength, temperature limits and finish across all the materials we print, see the materials guide →.
Color is worth mentioning too, since it's one of the few areas where a printed replacement can beat the original outright. Original parts come in whatever color the manufacturer chose; a printed one can be matched to your interior, your appliance's current housing, or left in a neutral tone if it's hidden from view anyway. It's a small detail, but on visible parts like knobs and covers it often matters as much as fit.
What It Costs
Two costs make up a replacement part: modeling (turning the broken piece into a 3D file) and printing (turning that file into a physical part). If you already have a 3D file — STEP or STL — modeling is skipped entirely and you pay for printing only.
Modeling
From a photo or physical partSimple geometry — a bracket, a knob, a flat cover — starts at €80. More complex shapes with curves, threads or interlocking features are quoted individually once we've seen the part.
Printing
Size & material dependentPrint cost scales with the part's size and the material chosen — PLA is the most economical, TPU and engineering materials cost more per gram and print slower. See the cost breakdown → for the full set of factors.
If you need more than one copy — replacement clips for several cabinet doors, the same bracket in a batch for a small fleet of machines — ordering them together is cheaper per part than reprinting one at a time later, since the setup work is shared across the batch. Every job gets a fixed quote before we start; nothing is billed as an open-ended estimate. Full pricing structure and ranges for both modeling and printing are on the pricing page →.
Turnaround follows the same pattern as any other custom job here: once the quote is confirmed, a simple single-part replacement typically moves from confirmed model to finished print in 3–5 days, while a multi-part assembly with several interlocking pieces takes 5–10 days. If the broken part is holding up a repair with a deadline, say so upfront — we'll tell you honestly whether the timeline is realistic rather than promise a date we can't hit.
Real Examples
Two projects from past work show the same principle applied to different problems — a fitting issue rather than an outright break, but the same measure-model-print path.
Pipe Clamps & Caps
Non-standard fitCustom pipe clamps and caps in any color to match the interior, with a perfect fit for non-standard pipe distances that off-the-shelf white or chrome fittings couldn't match. See the case →
Universal Plate Holder
Parametric designAn invisible wall mount for decorative plates, built as a parametric design that adapts to any plate size and shape rather than a single one-off fit. See the case →
Frequently Asked Questions
Can any broken plastic part be reproduced?
Most rigid plastic parts can — brackets, knobs, holders, covers, clips and housings. Limits are parts under high load, parts hotter than about 80 °C in use, and transparent parts. We assess feasibility for free from a photo.
Will the printed part be as strong as the original?
Often strong enough, sometimes stronger: we can add material where the original failed. Injection-molded nylon under heavy load is the hardest case to match — we tell you honestly when printing is not the right tool.
What do you need from me?
A photo of the part (or the broken pieces) and its main dimensions. Ideally the physical part by mail or in person — we measure it, model it and print it.
What does a replacement part cost?
Modeling from a physical part or drawing starts at €80 for simple geometry; printing cost depends on size and material. You get a fixed quote before we start.
Send a photo of the part — feasibility check is free