Quadcopter motor mount and parts for 1/2 x 1/2 square dowel from Home Depot or Lowes.

This motor mount was printed in PLA with 4 shells and 15% infill on a Makerbot Replicator at Techshop Chandler. I used Autodesk Inventor to design the 3d file.
The main frame is 1/2" square dowels and the landing gear are 3/8" square dowels on the motor mount or you can use the T fitting to make tougher landing gear for heavier multicopters.
The motor mounting bolt spacing will fit motors with anywhere from 20x20 mm mounting bolt pattern. I use motors with 16x19 mm bolt spacing. The motor mounts take about an hour to print with ,2mm standard definition.