01 · you
Show what broke
A photo and one sentence. The mounting tab of a damper in an 80s tape deck snapped off — no spare part anywhere.
- text, photo, STL, 3MF or STEP
- mm or inches
Create
3D‑printable parts
with AI.
Describe the part or send a photo. Get an STL or 3MF made to your measurements.
Opening the part designer…
Free to try · Free account to download · By pressing “Design my part” you accept the Terms of use. Privacy policy
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Live status →The part designer is taking a short break. Today’s free designs are used up. The part designer is offline right now.
Back soon. New ones open tomorrow. We’re on it. Leave your e-mail and we’ll write once when you can start.
Replacement gear for my mixer — 24 teeth, Ø26 mm, 5 mm D-shaft
Kerf · AI assistantDone. Spur gear, module 1, Ø26 mm. Nylon (PA) holds the motor torque at 41 % of its limit.
- ✓ model
- ✓ strength
- STL · 3MF · STEP
Ø26 · 24 teeth · 6 mm drag to turn
PA (nylon) STEP ↓
Replacement gear for my mixer — 24 teeth, Ø26 mm, 5 mm D-shaft
Kerf · AI assistantDone. Spur gear, module 1, Ø26 mm. Nylon (PA) holds the motor torque at 41 % of its limit.
- ✓ model
- ✓ strength
- STL · 3MF · STEP
Ø26 · 24 teeth · 6 mm drag to turn
PA (nylon) STEP ↓
how it works
From one photo to a part that prints
A part nobody sells any more, made while you scroll.
02 · questions
It asks what matters
How the new part should hold, the one size it can’t read from the photo, how warm it gets. Tap an answer or type your own.
- 3 questions here
- its guesses come with the question
03 · model
It designs a better part
Not a copy of the broken tab: a clamp ring that springs onto the Ø18.5 body, with the tab and both screw holes on it. No glue.
- bore Ø18.7 for a snug fit
- teardrop holes print without supports
04 · check
It calculates where it would break
With your load the program finds the weak spot at the tab root — exactly where the original cracked. Two ribs later, the most stressed spot has moved off it.
- door push 20 N, at 45 °C
- the colours are a program estimate, not a test
05 · file
You print it
STL, 3MF and STEP, plus a one-page part data sheet: material, walls, which side down. Open it in your slicer and print.
- PETG · 2.4 g · about 7 min
- standing on the ring’s end, no supports
Kerf · AI assistant
Hi! What do you need?
Describe the part or add a photo…↑
youThe damper in my 80s tape deck broke — the little mounting tab snapped off. No spare parts anywhere. Outer diameter about 18.5 mm.
Kerf · AI assistant
How should the new tab hold on the damper body?
Clamp ring around the body — no glueGlued to the break
Distance between the screw-hole centres?
6.8 — my estimate from the photo7
Up to about 45 °C, the ring only holds the damper — right?
YesIt gets warmer
Kerf · AI assistantA clamp ring for your Ø18.5 body with a slit so it springs on, the tab with two Ø2.4 holes 7 mm apart. File the old tab stubs flush.
Kerf · AI assistantAt 20 N the most stressed spot is the tab root.
youThe old tab cracked exactly at its root. Can you make that spot stronger?
Kerf · AI assistantI added a wedge-shaped rib where the tab meets the ring, a second one on the back. The most stressed spot is now the bottom of the ring, not the tab root (a program estimate, not a test).
Kerf · AI assistantFiles ready. PETG, 2.4 g, about 7 min — standing on the ring’s end, no supports.
Held by 2 screws— N + — N at 20 N
Thinnest wall 1.3 mmthe ring
Heat limit ≤ 60 °CPETG
On the printerstanding on the ring’s end
Why not just an image-to-3D generator?
Output
Image-to-3D / text-to-mesh: Surface mesh
wish2part: Built as CAD → STL, 3MF, STEP
Dimensions
Image-to-3D / text-to-mesh: Guessed from pixels
wish2part: Your measurements, with tolerances
Holes, threads, fits
Image-to-3D / text-to-mesh: Blobby
wish2part: Designed in (D-bores, clips, screw holes)
Strength
Image-to-3D / text-to-mesh: Not considered
wish2part: Calculated for load and layer direction
Good for
Image-to-3D / text-to-mesh: Figurines, decor
wish2part: Replacement parts, holders, adapters
What people make with it
Replacement parts →
The clip, knob or wheel nobody sells any more.
From a photo →
Photo of the broken part next to a ruler → CAD.
Text to CAD →
Describe it in plain words, get a part built as CAD.
Custom STL →
Holders, adapters, inserts sized to your stuff.
Gear generator →
Complete printable gears: teeth, hub, bore for your shaft.
LEGO®-compatible parts →
Wall mounts for your sets, minifigure stands, brick adapters.
FAQ
Is it free?+
Trying it is free: describe your part and see the model, material and weight as a guest. To download it and keep changing it, create a free account. Free use has a monthly limit — the app tells you when it is reached.
Which files can I upload?+
STL, 3MF and STEP — up to 10 MB as a guest, 50 MB with a free account. Small holes, flipped faces and overlapping bodies from Printables are repaired on upload. You get STL, 3MF and, for most parts, STEP back, plus a part data sheet.
What can’t the editor do?+
Fillets on the original mesh edges (on added tabs and ribs they work), text wrapped onto curved surfaces beyond cylinders, badly broken meshes (you will be asked for another export), and changing the design history of a STEP file — STEP files have none.
Do I need CAD skills?+
No. Plain words and a photo are enough. The assistant asks when a measurement is missing.
Can you print it for me?+
Not yet — printing and delivery are coming soon. When your part is designed, press “Print it” next to the model: we write to you once when printing starts in your country.
What won’t you design?+
These we decline. Everything else we design. Parts that people’s safety depends on — load-bearing, gas, mains, vehicles, children, food — get a clear mark in the part data sheet: the calculation is the program’s, from your data; check the part yourself before use.
- ×Weapons and weapon parts — guns, frames, receivers, magazines, suppressors, ammunition, blades or knuckles meant as weapons, weapon mounts for drones
- ×Explosives and pyrotechnics — casings, igniters, launchers
- ×Forgery — copies of IDs, banknotes, coins, stamps or official seals, and moulds for them
- ×Hidden cameras and bugs — housings that disguise a camera or microphone as an everyday object
- ×Getting around vehicle law — number-plate covers, speed-limiter or emission-control defeat parts
- ×Fakes — parts with other brands’ logos passed off as originals (a repair part without the logo is fine)
- ×Medical devices — implants, orthoses, parts of medical devices
- ×Toy-brand copies — minifigures or look-alikes, 1:1 copies of current LEGO® elements, parts of licensed themes (brick-compatible parts without the brand are fine)
Having issues?+
Tell us what’s wrong — a part that doesn’t fit, a file that won’t load, a bug or a question. I read every message and answer by e-mail.
Tell us what’s wrong →