I just picked up a Creality LD-002H and am new to resin printing. I’m having the same repeated issues on my first 3 prints and haven’t been able to find any direction to start trouble shooting after trolling reddit etc for several hours.
Basically what is happening is that after each print the entire FEP film has a thin (though probably a few layers thick) layer of cured resin on it. It covers basically corner to corner on the FEP but with some gaps where the print had been printing. It looks somewhat like THIS without the failed print stuck to it. So far things have been sticking to the build plate with no issue.
At first I had assumed that the culprit may have just been too much exposure on the initial layers but then my print this morning came out with multiple sheets of cured resin attached to the model at different heights, covering the same XY area as well as having a solid layer attached to the FEP. It seems that the layer on the FEP built up, then managed to adhere to the model and lift off of the FEP then repeat the process again.
I am using Monocure Rapid Resin - Gunmetal Grey. The settings are within the range recommended from Monocure for this printer.
Bottom Layers: 4
Bottom Exposure Time: 25
Exposure Time: 2.8
Bottom Lift Distance: 7
Lift Distance: 5
Sliced in Chitubox
The resin I ordered does appear to be old stock with a manufacture date of May 2018 so I have some suspicion that maybe this has something to do with my problems but I have no baseline to compare to.
The living room that I’m printing in isn’t tropical warm, it’s around 22-23*C. There is definitely not strong daylight coming into the room and the photo above was printed entirely at night.
Has anybody else encountered anything like this?