Printing with Dental LT resin there is a section of the build platform which is covered in a thin layer of cured resin after every print. It is always the same area and it only occurs with Dental LT resin. The part print perfectly elsewhere on the platform. I have tried a new build platform, resin …

Had this as well. It turned out to be an optics problem. Try this print: [image] Disassembling and Reassembling of the Form 2 / re-calibrating Tank-Tray Experimental OPTICS_Test.form (274.2 KB) Optics test file attached. Chris

Dental LT does have higher sensitivity too light as you noted and this makes it more susceptible to curing from stray light than other resins. If this is the only problem you are seeing, you can probably ignore it. But if you really want to try to fix it, it may be improved by cleaning optics. It…

Hey Maxim Thanks for your reply. By Optics are you referring to the mirrors mounted to the galvanometers or the large mirror? The optic window has been cleaned and appears defect free. The last 2 prints have failed :frowning: . Two attempts at printing tall white objects direct on the bed resul…

Ok, that definitely sounds like optics degradation of one sort or another (can be on the galvos, mirror, main window). Please get in touch with support and they will help you out. https://support.formlabs.com/hc/en-us/articles/115001299290 or support@formlabs.com

I have a support thread open. Unfortunately the responses are one day apart which means that complex troubleshooting takes weeks. Also I get a lot of instructions that ignore previous emails -_- Is it possible that the issue is with the Z axis zero position? I believe it is possible to adjust thi…

Thanks fantasy. What does this tell me? Presumably it is meant to test optic alignment? The parts that are printed are dimensionally correct and fully intact (no pieces of the model are missing).

[image] MachineKing: Thanks fantasy. What does this tell me? Presumably it is meant to test optic alignment? The parts that are printed are dimensionally correct and fully intact (no pieces of the model are missing). It depends on the outcome. My parts came out reasonably perfect as well whe…

Our service team should be doing a better job of keeping track of past messages in a support thread so that’s something I will look into. We have chat available as another type of support which you may find more convenient, though many issues will require moving to the ticketing system to give us t…

Patch of cured resin on the build platform after every print

Support & Troubleshooting Form 2

fantasy2 June 22, 2018, 1:24pm 2

Had this as well. It turned out to be an optics problem.

Try this print:

Topic		Replies	Views
Prints don't stick to build platform. Again Form 2	12	5515	June 9, 2018
Aw, the form 2 baked me muffins! Except I wanted Duplo bricks... Why is my printer doing this? Support & Troubleshooting	8	733	June 1, 2022
Dental lt fail Support & Troubleshooting	2	779	August 30, 2020
Almost nothing appearing on the build plate; sludgy resin Form 2	3	1964	October 16, 2018
Form2 not printing properly Form 2	10	2681	August 12, 2021

Patch of cured resin on the build platform after every print

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