I posted this as step files, feel free to modify or remix as needed. I only needed one screw on each side to hold enough belt tension but if you need more I provided spots for three screws per side.
I have also included an additional belt clamp remixed from the clamp provided by 1ockdown on Luke's Lab discord server plus the original belt clamp from 1ockdown. My remix just adds a small slot on the back of the clamp to help it seat into the toolhead better, and removed some filets to make it easier to machine on a cnc mill.
BOM
2x M5x100 BHCS
2x M3x12 BHCS
optionally 4x M3x16 BHCS
2x M5x7x10 heatsert
2-6 M3x4.6x5 heatsert
The author marked this model as their own original creation.