Print a replacement part: photo → STL → part
The dishwasher rack clip snaps. The manufacturer stopped selling it in 2019, the eBay listing is $34 plus shipping from a seller with two reviews, and the alternative is a new dishwasher. This is the job 3D printing was built for, and the process has three steps: photo, STL, part.
Step 1: Photograph and measure the broken part
You don't need a scanner. You need:
- Three photos — front, side, top — on a plain background, in daylight.
- A scale reference in at least one photo: a ruler, a coin, a tape measure.
- Calipers, if you own them, for the dimensions that matter. If you don't, a ruler and a note that says "approx." is fine.
- A photo of where it goes. The slot it clips into, the shaft it sits on, the screw holes it lines up with. This tells the modeler which dimensions are critical and which are cosmetic.
If the part is in two pieces, photograph them held together. If a piece is missing entirely, photograph the mating part and describe what's gone.
Write down what the part does in one sentence. "Holds the lower rack roller onto the rail; snaps in, takes the weight of a loaded rack." That sentence decides the material.
Step 2: Get the STL
Post the photos and measurements and say you need modeling. Makers who offer CAD will quote two things: the modeling and the print. For a simple mechanical part — a clip, a knob, a bracket with a few holes — modeling typically runs $20–80 and takes a day or two. They'll send you the STL or a render before printing so you can check the dimensions against the original.
Two things worth asking for:
"Make it slightly stronger." The original broke. A printed replacement in PETG with a thicker cross-section at the failure point will usually outlast it. The maker can add a fillet where the crack started.
"Send me the file." You own the STL after the job. The second time the part breaks it's a straight reprint, no modeling fee, from any maker.
If you already have a file — some manufacturers publish spare-part STLs now, and communities post them for common appliances — skip this step and upload it. Say the units.
Step 3: Print it
Material matters more for replacement parts than for anything else, because the original was almost certainly injection-molded in something tougher than PLA.
- PETG for most appliance parts: clips, brackets, rollers, latches. Tough, handles dishwasher heat and moisture, cheap.
- ABS/ASA for anything near a heating element or in direct sun for years.
- Nylon for parts that flex repeatedly or take impact — snap fits that cycle daily, gears, hinges.
- PLA only for cosmetic covers and knobs that never get warm.
Ask for the part printed so the layers run across the load, not along it. Makers know this; a note that says "this snaps in vertically and takes weight" is enough for them to orient it right.
What it costs and how long it takes
A typical replacement part is small — 5 to 40 cm³ — so the print itself is $5–15 (USD) in PETG, at or near the per-part minimum. Add modeling if you need it, and shipping. Turnaround is 2–5 days for the print, plus a day or two for modeling if there's no file. Rush 48–72 h is possible for around 50% more, which still beats a service call.
Order two. The second one costs almost nothing on the same plate, and you'll want it in a drawer.
Parts that work well
Rack clips and rollers, drawer slides and stops, vacuum brackets and latches, appliance knobs and dials, blind and curtain hardware, toy and game pieces, battery covers, hinge pins, cable clips, toolbox dividers, tripod and mount adapters, car interior clips and trim fasteners.
Parts that don't
Anything that has to be food-safe under heat, anything pressurized, anything structural in a vehicle, gaskets and seals, and parts thinner than about 1 mm. A good maker will tell you when a print is the wrong answer.
Right to Repair, in practice
Manufacturers are increasingly required to keep parts available, but "available" and "reasonably priced" are different things, and older machines fall outside the rules anyway. A printed part fills that gap for a few dollars and a couple of days. The price guide has per-material ranges if you want to check a quote; when you have your photos, post the part and say you need modeling.