What we need
We print from a 3D model, so the replacement part needs to be modelled in CAD first. Measure the original (calipers help), model it in a tool like Fusion, Onshape, or FreeCAD, and export a STEP file. STL, OBJ, and 3MF files work too. If you only have a photo or a broken part, we can’t quote it yet — you’ll need a CAD model first.
Choosing a material for a replacement part
- Inside a car, near a motor, or in the sun? Avoid PLA, which softens at around 55–60 °C. ASA handles heat and UV.
- Clips and parts that flex? Nylon or PETG bend before they break.
- Gears, rollers, and sliding parts? Nylon resists wear and runs with low friction.
- Small, detailed parts? Resin captures fine features and smooth surfaces.
Tell us where the part lives and what it does, and we’ll recommend a material in the quote.
Improve on the original
Original parts often fail at the same spot. When you model the replacement, consider thickening the failure area, adding a fillet to sharp inside corners, or orienting stress along the layers. Our design guide covers the basics.
Questions
Can you copy a broken part without a CAD file?+
Not yet. We print from STEP models, so the part needs to be modelled first. Once you have a model, upload it for a quote.
Will a 3D printed part be as strong as the original?+
It depends on the material, the orientation, and the original. Many replacement parts work well in PETG, ASA, or nylon. Describe the load and environment so we can recommend the right option.
Last updated October 27, 2026 · NanoArc3D