Interchangeagble magnetic build platform

- http://youtu.be/2RIBSVsIbjE
- http://flickr.com/photos/geekubator/sets/72157629825289523/

Some of you may remember how practical the removable build platform of the Cupcake CNC was! The aim of the project is to make a build platform (here demonstrated on a MakerBot Thing-O-Matic) which is easy to remove from the 3D printer and facilitates the removal of the 3D printed part by the pealing principle.

The base of the platform is made out of a 3 mm thick aluminium plate. It has twelve 10 mm holes in which 2.5 mm thick high-strength neodymium magnets are placed. The plate is screwed onto the heated build platform of the 3D printer.

The removable part of the build platform is made out of 0.6 mm flexible steel sheet. It is strong enough to resist any warping from the stress of the 3D printed plastic model, but flexible enough to be held down firmly by the magnets and to bend and be peeled of from the printed plastic model.

Normally 3D printed models with large bottom surfaces