Post date: Aug 14, 2013 2:41:39 AM
I finally got my CNC machine to do something useful (well, aside from being an awesome project and making that Li-Ion battery charger board, and maybe some other stuff I've forgotten. The point is that it's taken a long time to get to this point)- making a breakout board for my LCD. It's 10 mil traces, with 0,5mm-pitch pads. Some traces are 20 mil; they stand out pretty well in the picture. The board is rough due to me sanding off some minor burring.
Without further ado...
EDIT 2013/08/15: I should perhaps comment on the configuration and setup used to cut this board. The bit was a 0.1mm-tipped 30-degree pyramid engraving bit, with the holes drilled by a 0.015" end mill (I've found "drilling" with end mills to be cleaner than using actual drill bits, in addition to arbitrarily-sized drill bits not fitting in my collets). The holes were later drilled further with a 0.03" (0.8mm) drill, since my 0.1" headers didn't fit through the 0.015" holes. The trace milling was done at 8 inches/minute, I believe.