This is a copy of this design: http://www.thingiverse.com/thing:421887 I removed the base and pass the STL in the Microsoft 3D printer website to fix some problems.I printed with 0.233 layer height, 5% infill with ABS. 3 top solid layers, 3 bottom solid layers and 3 outline perimeter. Create some support to the fingers and forearm. Make the Z axes move up 0,15 mm during the print to prevent not to brake and print layers inside-outside.