March 12, 2026
Description
My left foot is clearly pronated, and it wrecked too many shoes.
These insoles are very easy to print, use very little filament and greatly improved my foot angle.
I have been testing and wearing them for more than 2 months now and they are holding up great (slightly molded to the shape of my feet, the raised curve is intact).
I highly recommend you print these in TPU. There's a crosshatch pattern making them extremely breathable.
You could print them in PLA, but I would recommend you place it below a thin foam sole for comfort. TPU is perfect for this application.
Here's a table with US and EU shoe sizes
⚠ Sizes are approximate. Measure your foot and use the Scale tool in your slicer to fine-tune the fit.
| Insole length | EU size | US men | US women |
|---|---|---|---|
| 230 mm | 35 | 3.5 | 5 |
| 235 mm | 36 | 4 | 5.5 |
| 240 mm | 36–37 | 4.5 | 6 |
| 245 mm | 37 | 5 | 6.5 |
| 250 mm | 38 | 5.5 | 7 |
| 255 mm | 38–39 | 6 | 7.5 |
| 260 mm | 39 | 6.5 | 8 |
| 265 mm | 40 | 7 | 8.5 |
| 270 mm | 41 | 7.5 | 9 |
| 275 mm | 41–42 | 8 | 9.5 |
| 280 mm | 42 | 8.5 | 10 |
| 285 mm | 43 | 9 | 10.5 |
| 290 mm | 43–44 | 9.5 | 11 |
| 295 mm | 44 | 10 | 11.5 |
| 300 mm | 45 | 10.5 | 12 |
| 305 mm | 45–46 | 11 | 12.5 |
| 310 mm | 46 | 11.5 | 13 |
Hope this helps someone out, I'm happy to share this on this platform in the great hopes of helping people help themselves, and save some shoes.
📐 For perfect sizing, you can use the SCALE tool in BambuStudio:
⚠️ Disclaimer: I am not a doctor or podiatrist. This is not a medical device and has not been clinically tested. This is a personal project that has been helping me — shared in the hope it might help others too. Consult a healthcare professional for any foot condition.
Big thanks to @OT_Jray for correcting me on the medical terms, I previously called this model and my problem SUPINATED, turns out it was PRONATED (pronation).
Boost MeYour boosts keep me sharing my design for free! Hope you enjoy it! Happy printing🔥
License:
MakerWorld Exclusive License
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