I've been consistently getting wrinkled surfaces on my prints.
These defects appear consistently in the parts facing the back of the printer, regardless of the part position on the build platform. It can be more evident on vertical surfaces.
I've been through it with support already (Brian and Nicholas were very polite and attentive) and we tried a lot of things. Increasing the height above the base to see if it had anything with resin flow. I've cleaned all the mirrors spotless. We tried different orientations, cleaning before the IPA bath.
I've tried with different resins and different trays. In every case the first few prints with new resin and tray come out flawlessly but then they start to get wrinkled,
I've run out of trays to keep testing, but I've tried cleaning the tanks and straining the resin and that didn't had any effect.
Support has ran out of ideas and the only option I'm left with is a factory repair, but since I've had a very bad experience last time when I sent the previous machine to repair because of defective galvos (the machine I have now is a refurb form1+ I got in exchange for that defective original form1) where I was left without the printer for almost a year because the shipping company failed to properly handle customs regulations (despite our warnings about that). And now I got this machine which, while able to print whole pieces, I can't rely on for detailed prints.
And during all of this it seems that my warranty expired so I'm looking into ways to fixing it myself. It's a sad state of affairs.
Support declined to comment on possible causes and have no idea how to diagnose it.
Given the nature of the effect I'm mostly worried about it being a laser issue but I think it's the most likely cause.
Here are some other pictures
I'd appreciate any help the community could give me.
Thanks in advance.