This is the second revision of the Ryobi TR45 mount. It allows the drill bits to reach all the way down to the waste-board.When printing, no support or rafts are needed. Simply print at a maximum of 0.3mm layer height (to make the piece less brittle). Infill at least 50% Use M5x60mm screws (from Shapeoko gantry) to tighten clamp, and M5x30mm hex screw to attach adapter to gantry. Test part printed on XY high speed http://www.thingiverse.com/thing:436295