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Guided project

Calibration Cube

Design the cube every maker prints first: 1 inch, rounded, with X, Y and Z marked so you can check your printer. About 20 minutes, and it prints in well under an hour.

What you'll make

  1. 01Make the cubesketch a square, extrude it
  2. 02Round every edgeround edges (fillets)
  3. 03Mark the topsketch on a face, add text, cut
  4. 04Mark the sidesthe same on the side faces
  5. 05Ring the other facesrepeat a feature on every face
  6. 06Get it ready to printexport an STL
Time
About 20 minutes in the app
Printer
Not needed to finish it
Input
Finger or Apple Pencil
Runs on
iPad, iPadOS 27 or later
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The finished top of the cube: a ring and a Z cut 0.6 mm into the face.

You made a calibration cube

A cube, rounded, then marked on its own faces. Print it, put calipers across each pair of faces, and each axis should read 25.4 mm. If one is off, your slicer can scale that axis.

Print it

PrusaSlicer estimates about 32 minutes and 6.6 g of PLA on a Prusa MK3.5 (0.4 mm nozzle, 0.20 mm SPEED profile). Your printer and settings will change that.

Check it worked

Put calipers across each pair of faces. Each axis should read 25.4 mm. If one is off, your slicer can scale that axis.

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