Have been using a diamond drag bit to etch cast Acrylic for base lit projects and would like to go even deeper so the engraving shows up even without lighting. Have purchased a 30deg. 2 flute V bit designed for plastic and need some info on a good starting setting i.e; spindle speed, feed rate, depth of cut etc. that worked for you. I realize all machines are different, I just need a starting point. My max spindle speed is 12K. Any info appreciated.
Try max rpm at 400mm/min at a depth of .8mm. expect to do a clean up pass at an additional .2mm. Just remember, the deeper you go, the wider the channel.
I have made edge lit engravings with a v-bit quite a bit. The best thing to do is engrave it in reverse on the back side. It will appear much cleaner
Thanks. Don't know how I missed it but Vectric has a "fill" feature that works with the diamond drag tips to fill in text, Really makes it pop.
