Calibration comb

The design files for this thing have been removed as a protest against Stratasys after their decision to file a patent infringement lawsuit against Microboards Technology.
Their decision is extremely destructive and also underlines that the patent system is obsolete as it no longer serves any purpose for the betterment of society. Its main role is as a blunt weapon used by incumbents to hamper innovation.
I see absolutely no reason to continue indirectly supporting Stratasys by providing fre