First Test of Scratch Engraving Process
The letters were smaller than any end mill or engraver that I had. So I tried a scratch engraving process with a pointed tool.
-Use a sharply ground & pointed 1/8" dowel pin
-Engrave depth of about 5 thousandths
-0 RPM Feed of 7-10 IPM
-Step over of 20-30%
-Make sure that the piece is flat.