Quote Originally Posted by m_gansler View Post
I've had some better success using the "spoiler" plate and these bits
http://cgi.ebay.com/30-degree-bits-f...3A1%7C294%3A30

But I'm still coming up the learning curve. I'm using 1/8" acrylic painted with a few coats of black spray paint. Using an end mill always leaves the edges raggy. Using the V tip engraving bit (above) does a better job, but I haven't had much luck with leaving a mask (tape) on. If I leave a mask (packing tape, masking tape, scotch tape) on before I engrave so I can paint the engraved letters white, the tape always gets too raggy and lifted up. Any suggestions?

Thanks,

Mike
You'd almost do better with the .012" tip. I've never done micro-lettering with a CNC machine, but I have had good luck with masks made for use with V carve bits. A good place to learn about that would be the cnc forum over at Sawmill Creek. (sawmillcreek.org I think)

g.