@Darick_Nordstro wrote:
Suddenly, catastrophic print failures and new rumble-grinding sound at the end of the peal. It also looks like the cycle reversed, with the laser shooting when the platform is too far away. This begins each time at the 45th layer, independent of whether I start the platform down .1 lower, or make a thicker raft, etc.
It definitely was a sudden new noise and completely different failure mode. The nearly-new tray being used when that first happened was removed and emptied, and has a crack line from the back acrylic forward a little over an inch that wasn't noticed until emptied.
New tray, mirror checked and lightly cleaned, same noise. When doing the test print at 100u, the sound starts around 30 layers into the print, so it seems to be related to build distance from the start.
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