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Ok collective, I had a weird fail last night I wanted to put up for the group to diagnose. That large hole in the side of the elephant shouldn't be there, obviously. Same with the one in his neck (the neck does have a 1.5mm drainage hole, but not a gaping wound)

1) it's not a support failure. The missing section is practically vertical, and I've also printed this same file successfully.
2) the photon file is valid. It has a number of 1-5 pixel islands just because of the elephant skin texture, but nothing significant.
3) LCD is working fine. You can tell because details above and below the missing section printed fine, and because there's a flat ridge of built up resin when the section finally fused with the main body again.
4) FEP has no leaks but it is starting to show it's age, so I'm replacing it now.
5) resin is Monocure Rapid grey, 8s exposure, 40s base layers, 23 degree Celsius room temperature.

All I can figure is that the resin wasn't mixed well enough, and that resulted in a puddle of it toward the middle of my plate that didn't cure properly. Simon Powell also suggested pre-heating the resin, worth a shot :)

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EDIT: It's a USB stick failure. If you haven't already, set that cheap USB stick the printer ships with on fire, and buy a good one.

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I ran into an interesting print failure today... the printer itself seems to be butchering my .photon files.

After a failure earlier yesterday, I inspected the sliced file to make sure everything looked fine - and scrolling through the layers on my PC, no problem. File size was 48 mb.

The print started fine, but failed completely after about 1cm - and we're not talking about a support failure or anything similar because the entire print just sheared at that point, nor an LCD failure, because there was resin cured on the FEP, just not where it was supposed to be.

So I inspected the .photon file again on my PC... first thing to note, it's now 47mb instead of 48. Then, scrolling through the layers... well, see for yourself.

Has anyone encountered this? I had a similar failure the day before, where a ~40mb print failed halfway through, baked a solid display-sized rectangle of resin onto the FEP... and the .photon file was a mere 400kb on the USB stick after the print.

I'm thinking it's a Firmware problem, but if there's another culprit, let me know :)

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I'm using Anycubic Grey with 0.05 / 10s / 1s off / 8@50s bottom layers. Most of my prints are fine, but I'm getting some weird wobbles and blurring of details on any surfaces facing the build plate. You can see a sort of wave pattern, cresting at the supports, on what should be straight segments on this print.

Is this a result of overexposure? It seems to me that resin on top of the part is curing as future layers are set up.

The suggested settings for this resin are 0.035 @ 14s in the spreadsheet, and I had similar problems at this settings as well.

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