This is a 20x20x20mm calibration cube with several features to test various aspects of a print as quickly as possible. It has 10mm and 3.2mm holes vertically and horizontally, overhangs, 1mm to 0.05mm gaps in the top layer for tolerance and more.
If you appreciate this model and feel generous you can buy me a Pepsi.
paypal.me/MJGray87

detailed calibration cube.stl

This is a 20x20x20mm caligration cube with several features to test various aspects of a print as quickly as possible. 
It has 10mm and 3.2mm holes verticaly and horizontaly, overhangs, 1mm to 0.05mm gaps in the top layer for tolerance and more. 

If you appreciate this model and feel generous you can buy me a Pepsi. 
https://paypal.me/MJGray87?locale.x=en_GB

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detailed calibration cube.stl