1/8 is terrible thick for jewelry. Not even sure you can get it onto the tiny earring hooks. I use the slimmer stuff.
Got good numbers for the 0.060 to 0.080 (basically the 1/16th stuff) and they work with the two color as well as single. I just shift the thickness so probably a little fudge allowed in these numbers.
eng - 1000/100 195 @0.060 thick
score - 300/40 @0.060 (If lite score wanted - drop the 40 down)
and cut - 170/full @0.060 thick.
For the thicker stuff I used for designs other than jewelry, I just gave it the PG Clear Acrylic values and cut it loose.
EDIT- values have changed since this post was made. (see post below)
engrave 1000/60 @195 (for 0.060 thick) - this leaves glue and spotty misses if acrylic is masked- so still 80-100 if masked.
score 300/15
cut 225/full (can use 100 instead of full but some colors will not cut good then so I just use ‘full’ all the time)