SK12 12mm shaft mount + SK12 enforced version

Here you may find two version of SK12 12 mm shaft mount. The basic version is the same as standard (metal) one, and the enforced version can be used interchangeably: it has the same mount locations and same proportions, but has more "meat", thus is more durable.

Enclosed are the .scad files for you to play, the thing is parametric. Enjoy!