I case someone else needs a starting point on denim.
I used a height of .015 and engraved at full speed (1000). The numbers next to the pics represent the LPI. Both have been washed already.
1st pic is Medium weight denim.
The set of pics on the left was done at 15 power. The right side was just 1 power.
Notice the top right “1/full” text that looks great. I mis-typed and it engraved at 31 power instead of the 3 I wanted. It was too much. It didn’t eat through though the denim, you can just see it from the back and likley won’t wear well.
The second pic is a much lighter weight denim shirt I tried at 15/1000. It was too much and ate through in one place. I’d dial it back and start about 8 on the lightweight stuff.