3DPrinting

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[Resin Printing] Any tests for finding the minimum lift height? (self.3dprinting)

submitted 1 day ago by papalonian to c/3dprinting

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Something I've noticed when watching my resin printer work is that a lot of time is spent every later lifting the plate well after I hear the model unstick from the FEP.

It's not a huge deal on smaller prints, especially ones that can be printed with "vroom" settings, but on larger models that are being printed at 1-2mm/s lift speed, several hours are spent just waving the model in the air for no reason...

I had the idea of making a test model that is essentially an intentional suction cup in the center of the plate (where FEP stretch is most prominent and required lift distance should be highest). I would print this model multiple times, with slightly lower lift heights each iteration, until it fails to release from the FEP. I'd add a safety margin and set my raise height to that...

Does anyone see any fault in my logic, or know of a better method of achieving what I'm after?

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[–] papalonian 1 points 21 hours ago

All very good points. I think if I want to continue entertaining this idea I need to adjust my sights to a more general number than anything exact. Another user pointed out that time spent testing vs time saved would be a pretty close cut. I might devise a test to find a general minimum, increase it by a fair margin, and call it close enough.