HE3d K200/K280 heated bed mounts

Improved mounts for the K200/K280 delta/rostock 3D Printer. Rock solid! Easy to level, and you can remove the bed without releveling every time.

Includes an M3 nut driver tool for the M3 nuts.

For mounting the bed:
* 6 M3x40mm screws with pan heads
* 18 M3 nuts
* 12 M3 washers
* 6 springs
* 6 M3x3mm nylon washers