printrbot Simple Pro Bed Sub Frame Assembly

6mm (2 X 3mm Baltic Birch ply) stacked wooden sub-frame to facilitate an aftermarket bed heater on bottom of original bed. The cut file now measures 300mm X 165mm to enable using a 12" X 12" Birch blank. The 3d printed belt ends are interchangeable and designed for a snug fit into the wooden slots with 6mm ply thickness. This is a work in progress waiting on other parts for assembly.