My Kicad PCB is almost ready to be made by 4PCB but I am using their free DFM and I am getting 52 errors on Missing Solder mask Clearance. It is also saying “All component holes should have soldermask relief”.
All power traces (3.3V and GND) are different from default design rules, have 20 mil track width, 40 mil via diameter, and 20 mil via drill size. I tried lowering the drill size from 20 mil to 14 mil but that didn’t help. I clicked Edit All Tracks and Vias and Clicked “Set tracks and vias of the current Net to the Netclass value” and it did not help. I also pressed “E” on the keyboard manually while the mouse hovered over the “power” vias.
I changed Dimension -> Pads Mask Clearance from 0.0078 to 0.006 and 0.085 but I didn’t have to change this in my smaller project that passed all 4pcb DFM tests.
A smaller PCB that I created has with the same via drill size, via diameter, and track width and there were no problems with the 4PCB DFM. Maybe there is a way to reset vias? There is something not right. My Kicad version is 4.0.7 and I am using Windows 7.