Printrbot LC and LC PLUS dual j-heads upgrade kit

Upgrade Printrbot LC and LC PLUS to dual heads 3D printer .Just simple cut a MDF by laser with file plus_dual_mount.dxf or print it 6mm thick ,and replace the origin part .j-head adapter is a simple adapter to mount the j-head ,the X offset between two head should be 25mm ,Y and Z offset is 0 .