Printer calibration · 10 minutes

Teach FitPrint how your printer prints holes.

Every printer, nozzle and filament prints holes a little smaller and pins a little bigger. Print this tiny coupon once, find the hole your pin slides into, and every model FitPrint generates is compensated for your machine.

Rendering coupon…
Plate with 6 test holes + one 6 mm pin · ~4 g · prints in ~10 min
  1. 1Print the coupon with the printer, nozzle and filament you normally use for functional parts (0.2 mm layers, no supports, no brim).
  2. 2Let it cool. Each hole is marked with dots: 1 dot = 6.1 mm … 6 dots = 6.6 mm. The pin is exactly 6.0 mm.
  3. 3Starting at 1 dot, push the pin straight in. Pick the first hole where it slides all the way through with light finger pressure — no wiggle, no force.
  4. 4Select that hole below and save. Done — your fit gap is used for every new design.
Which hole fit?

None fit, even 6 dots? Your printer over-extrudes — calibrate flow first. Fits loosely already at 1 dot? Choose 1 dot. Stored only in this browser.