Unfortunately, less than a day after we fixed my previous issue, I seem to have another. The laser on my printer seems to be outputting far weaker than normal. The picture I attached above was my latest look at the laser. It’s taken in a pretty dark room, and the laser is noticeably dimmer than what I know it should be. It’s currently set to 63 in the picture.
I know that 63 is considered very high for laser power compared to the 58 for the peopoly standard clear resin that I am using, but I was having perfectly fine prints with it so I didn’t think much of it. (during my original testing, 58 did not cure the resin past the first layer to begin with) The ring test I originally did at 63 came up with all of the holes open, save for one which had uncured resin in it. (Didn’t do a good job washing it after printing).
However, now, at the same 63 laser power, I am not getting any curing at all out of the printer, save for a very thin, flimsy layer stuck to the build plate. I took a look at the bottom chamber to see if resin had dripped onto the protector glass, but it’s spotless. I even removed the protector glass when I took the above picture and it still looks that dim. My results are the same between the PDMS and FEP Vats (yes, I re-leveled when I switched). As far as I can tell, the bottom of both vats are clean. Has my laser seriously done itself in with less than 20 hours under the clock?
Edit: I was able to get a print out of the machine again, but I am now all the way up to laser power set to 79. Room is at roughly 18c, but there is a heater in the chamber, and I am letting it set for 30 minutes before starting a print.