Only halfway through seems to be a focus problem, especially if you just did a cleaning - either a problem with the autofocus value when it did its scan, or the lens is backwards causing the beam to be out of focus at that range.
There are two windows outside the head, plus the lens and the mirror. I would double check the thickness being used as well. My experience is the Proofgrade settings are perfect only when everything else is, otherwise I kick it up some.
Then I would see what the proof grade settings do and kick it up a notch.I would also run a test on any material with a wide range of settings and save the test for future reference
Mine is clean as well. I got around to taking some measurements and the Medium PG Clear measures .109 the
Medium PG Frosted was at .143 had to slow down speed to cut all they way through. I checked 6 different pieces of Medium PG I had on hand and the all came in at .109 to .124
Do you have calipers? They’re really an essential item. See if you can measure the acrylic. It would be very strange if it were a slightly different thickness since it’s such a standard material, but if it is GF should know about it. *I stand corrected, but still think a measurement would help!
I’m not sure I would be that surprised. Seriously, though, if it’s visibly off, a measurement would be good. Just saying it’s thicker than something else doesn’t say anything. Saying that it’s X thick allows GF to ensure it’s within their expected range and tweak settings if they need to.
They sell the material and set the parameters for the material. I can post the exact thickness down to the micron but I am hoping that glowforge will adjust their settings so i don’t have to. When i buy proofgrade material it is so I don’t have to fiddle with settings. I use plenty of non proofgrade material and i expect variation and experimentation. I do not expect that for proofgrade. At least one other person reported the same issue with the same material so it seem fairly straight forward. Eg glowforge needs to update the settings for this material or ensure that the material is consistent for the current settings
Right, but the point I’m trying to make is that without the numbers there is no way for them to know if it’s a bad batch that they need to deal with or settings that don’t work.
Anyway, I have no skin in this game. It was just a suggestion.
I’ll be happy to post the exact dimensions when i get home. It kind of highlights my point though, mainly that i should not have to measure board thickness for proofgrade , that is the whole point of paying the premium for that material