Duet 1LC Mount in the V Core 3.1 Toolhead

I tested with a v1.0 cheap clone board. I bought a new genuine one to replace the problematic clone board, but have not tested yet.

This supports v1.0 to v1.3, we can just choose 4 suitable m3 inserter holes. This needs 4 m3 heat inserts and some m3 bolts.

I feel it is better to print it as two parts, with both flat surfaces down, but you can try the single unit version if you want to.

There is 3mm space left for a filament sensor (I have not tested it yet). If you do not have a filament sensor, you can print a standoff washer (3mm depth one) to fill the gap.

It's better to add standoff washers to avoid bending the board, and some also recommend to add standoff to limit the contact of bolts and board. Depending on the heights of pins on the board and available m3 bolts, we can print some washers in advance. Cutting a 4mmx3mm PTFE tube should also work here.