This is my adaptation of Ultimaker bed plate for MK2b heater.

I've made 2 versions:

• One is based on original design for Ultimaker 2 heater with added mounting holes for MK2b heater.
• Second version is designed for my custom heater plate. It has all mounting holes in 3,2mm diameter since I prefer m3 nylock nuts for heated bed leveling over UM2 thumb screws.

I recommend to laser cut it of 4mm PA6 aluminum.