Sorry if I got the terminology wrong. I’m trying to make a Tooling Hole that is specified by my PCB manufacturer (JLC).
They say “Tooling holes should be 1.152mm(45.4mil) round non-plated holes with 0.148mm solder mask expansion.”.
I have no problem with the 1.152 round non-plated hole - easy. But I don’t know how to do the .148 solder mask expansion. When I create the pad in kicad, I can put the drill dimension to 1.152 and it will make the solder mask 1.152 as well. If I try to enlarge the solder mask to 1.3mm by setting the hole size to 1.3mm it works, but also puts copper on the pad (just not inside the hole according to the 3D preview).
So if I set Copper to “none” in the pad properties, I get an error message saying:
Error: the pad is not on a copper layer and has a hole
For NPTH pad, set pad size value to pad drill value, if you do not want this pad plotted in gerber files
It’s too bad, because it looks like those settings SHOULD give me the hole I want.