So, under no circumstances should you do this.
OK now that we got that out of the way, @ovm.steve had an interesting idea to try scoring with the lens in upside down, to try to get a wider line. So I decided to try it at the extreme. I did three tests on white cardstock:
- No tray, focus height set to 0.5", lens in correctly.
- No tray, Focus height set to 0.5", lens in upside down.
- No tray, Focus height set to 0.5", NO LENS.
Result? They were all about the same, roughly 0.08" wide. Width and line consistency is much more affected by power level than lens orientation or even lens presence. In theory you could roughly fill in an area at 12.5 LPI at that sort of pitch.
There’s something really subversive and unsafe-feeling about lasing without the lens. I wouldn’t recommend it, if for no other reason than to keep smoke out of the laser head and away from the mirror. That being said it did make me giggle like I was up to something, so there was that. Don’t say I didn’t warn you!