(Short) Fiber Laser ABS Keycaps Engraving w/ settings 

I recently switched to SA profile keycaps. I love their raised feel and vintage "mainframe" look. However my mechanical keyboard has some multimedia keys that I use a lot (Volume control and Calculator shortcut). I looked EVERYWHERE and couldn't find these key in SA (or any other profile). Finally I found some black SA keys (made from ABS plastic) online and tried engraving them with my 30W no-name Fiber laser. Results exceeded my expectation. White ABS engraves extremely well to very dark (almost black) grey. I found on my 30W laser that 1500 mm/s speed, 50% power, 20Hz and 0.05mm hatch works the best.