Basic 2 point buss bar using 1/4" hardware and 3/4" flat bar as the union inside.

I recommend using ASA as it will handle heat much better but this is still an experimental untested design (long term).

The STL is the prototype and the bolt head clearance was a little large for my taste so I tightened it up, made the text bolt and made it a 3mf file.

Cut a piece of 3/4" flat bar to under 50mm and drill 2 1/4" holes 25mm apart, an equal distance from the center and assemble

Creality

CR-10

No

No

.3

20

Recommend 4 walls at least but use your judgment. 20% infill seemed to work for me.