Hole & Cutout Size Reference Plate (Circles, Slot, Square)
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A calibration test plate — print it, measure the holes with a caliper, and see how accurate your printer really is
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- Printables
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- Creative Commons — Attribution — Noncommercial
Hole & Cutout Accuracy Test Plate (5mm–30mm)
A simple test print to check how accurate your 3D printer really is. This plate has labeled circles, a slot, and a square cutout ranging from 5mm to 30mm — print it once, then measure each cutout with a caliper to see how close your printer gets to the actual marked size.
Why this matters:
Most printers don't come perfectly calibrated out of the box. Small errors in flow rate, steps/mm, or first-layer squish can make holes print smaller (or larger) than they should — which causes screws, inserts, bearings, or connectors to not fit right in your other prints. This test catches those issues early, before you waste filament on a bigger project.
How to use it:
Print the plate flat, no supports needed
Let it cool fully before measuring (plastic shrinks slightly as it cools)
Measure each hole/cutout with a caliper and compare to the labeled size
Check the results below to see what they mean
Print settings used:
Printer: Ender 3 V2 (stock 0.4mm nozzle)
Layer height: 0.24mm
Infill: [15%] can be lowerd
No supports required
Tip: Run this test again after any major printer maintenance (nozzle swap, bed leveling, belt tension) to confirm your calibration is still on point.