Calistar

Note: The spreadsheet and source code is hosted on github (https://github.com/dirtdigger/fleur_de_cali). See there for the latest versions of those. Stls will be kept up to date here.

This is a free, open source, parametric tool used for adjusting the dimensional correctness and skew of your printer. This model performs a similar function to other prints such as Califlower, but has no relation to nor has been derived from any part of those. Turns out that the math behind printer skew calibration has been around since Euclid, and anybody who paid attention in trigonometry can easily figure it out on their own…

Parameters you can control within the Cadquery source code (located on github):

Number of measure points for each axis, up to 5 (default is 3)
Thickness of the grid separator pieces (default is 4mm)
Total width of the print (default 120)
Height of the print (default 4mm)

Features:

Parametric design. Try this with other calibration prints: scale up the model by 20