| Feature | Chart | This printer |
|---|---|---|
| Normal fit hole | 3.40 mm | 3.63 mm |
| Heat-set pocket | 4.00 mm | 4.23 mm |
Drilled, tapped and printed hole sizes for screws, and the pocket that holds a heat-set insert, hex nut or bearing. Charts give the standard size, but no printer or mill hits it exactly. Print or mill our calibration part, add your machine in the app, and every size comes out corrected for that machine.
Open the FitCheck appSearch any size and calibrate your machine - free, nothing to install, no account.
Also: design patterns for printed holes that fit · open dataset of printed hole error
Metric and imperial clearances follow published mechanical-engineering references · heat-set pockets per CNC Kitchen · bearing housing seats follow published fit tables. Reference only - verify before you cut.