A simple 6mm thick Heated Build Platform. This was designed to make my ToM more reliable. As I have been dialing in the Z height more accurately recently I have encountered issues due to slight warping of the HBP's PCB and have had a few occasions where this has resulted in failed prints, removal of Kapton tape from the HBP surface and damage to the HBP itself. As I increasingly leave the printer to do its thing unsupervised and place it in the hands of others I wanted a more reliable surface to ease my mind. Designed in 5 minutes in AutoCAD using the ToM's laser cut acrylic build surface CAD files from here http://www.thingiverse.com/thing:4973 and featuring countersunk holes on both sides for 6x M3 machine screws and filleted edges all around. I hope to use this as the base of a new ABP I am working on in future too.UPDATE: Please note that you will need 6x countersunk M3 bolts which are not supplied with the ToM kit. I also needed to enlarge the countersinks slightly for the bolts I had chosen to make them flush with the surface. Furthermore I cleaned the Al surface with Alcohol and the Kapton surface with acetone before printing. ABS would not stick to the hot metal surface for me so I had to cover it in Kapton tape.