I successfully etched glass before the new settings took effect.
Here are the settings I used and the results I got.
To begin, I have heard the the cheaper the glass, the better the results with a CO2 laser like the Glowforge. You won’t get nice results on pyrex like you do on a cheap frame from the dollar store, like these.
First, I masked the glass; though others suggest a thin layer of dish soap is effective and easy to clean up.
Weeding little bits… good thing I have a box of lens cleaners… they work great on cheap glass. This is where dish soap would win.
Another suggestion, if you want the etching to have more contrast, try etching then painting. You would have to weed more carefully and be aware of the paint you want to keep in the etching.
This first one was 800/40 at 225 LPI. It looked pretty weak, so I did a second pass, and I think that was pretty weak, too.
Easier to see the shadow of the etch than the actual etching.
Next, I have this silly quote etched at 700 speed on full power. Only one pass. Shows up better, but I’m not fully convinced.
I slowed down the speed to 500 and left it at full power. A bit better. Sorry the photo is sideways.
And my final etch is at 395 and full power. Legible. I might go for even slower another time, and then update the results here.