Kossel 2020 'rpi-netfabb' dadapter

This is an adapter for a Kossel 2020, to mount the exellent RPI-Case designed by '0110-M-P'. -> https://www.thingiverse.com/thing:922740/#files

Adapter -> Mounted on the frame with 4 pieces M3x10 screws.
RPI-Case -> Mounted on the adapter with 4 pieces M4x10 screws and 4 pieces M4 nuts.