ERCF- selector motor support MOD for NEMA17 pancake (up to 23mm)

This is a slightly slimmed version of original            selector motor support for ERCF 1.1. It consist a little bit more place for a pancake NEMA17 motor up to 23mm (there is a 24,3mm on a model, but more than 23mm of a motor might be difficult to place). Every other fixing points are left alone. Carrot logo is redone - I couldn't fix original geometry of it.