Hey all, Ive been trying to engrave some text, and while its coming out OK, its not perfect. the problem is that the edges of the letters and paths have a burl or flash on them, raised above the surface. Like my tool isn't fully cutting the material, its half cutting then pushing it up out of the way.
I need .125 high letters, I tried .oo5 depth (not too good) and .007 depth (better, atl east I was able to use my fingernail and scrape the flash off here)
Im using a carbide 60degree 2 flute v bit, .0625 diameter, .005 flat, from precisebits.com. I run .003 depth per pass at 15 IPM, around 27k rpm. Maybe 5 thou per pass instead of 3?
any tips with rotary engraving of alum? which bits have worked best for you?
thanks for any insight and experienced tips!!
~Steve