Thanks for sharing.
I have noticed some problems on the rollers of our machines.
The problem occurred for us when we had a batch of Flex V2 parts (17 parts, 342ml each, 20.5h per part). Machines ran for around 22h per day for this project.
Machine 1 Form 3 - Tank 1 - 33 days old, 409hr print time
Machine 2 Form 3 - Tank 2 - 34 days old, 426hr print time
Machine 3 Form 3B - Tank 3 - 27 days old, 311hr print time
First I noticed that some supports failed to build and compromised the part integrity. Prints continued to degrade, and then I was forced to clean the tank using a printing mesh.
Then we noticed the bottom of the tanks had marks / scratches where the rollers would run. Had a look at the rollers, they needed cleaning. Did this on the first Form 3 by entering Replace LPU mode under settings => maintenance.
Second Form 3 continued to print, but with increasing noise and vibrations (sorry, but it sounds like a bad stomach growling). This one is still printing right now, but I will have to do more cleaning of the rollers, which seem to have built up loads of friction due to resin being around them.
On the third, Form 3B, we had black Flex V2 resin residue on the bottom of the tank, which was very hard to remove. It also followed the same pattern as the first tank with horizontal lines. Once I tried to clean the LPU rollers, I discovered that some of them were stuck! Turns out the Flex V2 resin was blocking the rollers from moving, and that it is able to get underneath the roller itself. This cleaning is a longer process if you choose not to disassemble the LPU. I had to use several several IPA wipes to clear, then rotate, then clean, rotate, clean, repeat combinations… Seems clean now.
I do not have any leaky tanks, but the resin has found ways to get to the LPU rollers… Now I have a batch of Rigid 4K parts running on all 3 machines.
Will share if the marks, residue, and / or vibrations start up again.