About this 3D model

I based this upgrade on http://www.thingiverse.com/thing:42250 from whpthomas. Please follow his directions for items you need. Changes that I have made: Shorter arm so that it can fit into the 2X on both sides Big feed hole Using the top left and right screw holes to hold the base against the motor Added a groove so that it is possible to add a screw from the front to keep the arm in position Added a way to hold a nuts at the back for the two screws that will go through the arm