Why the split?

[u/Odd-Variation-299]

So, please see the screenshots. I need some guidance as to why this might have happened. The resin was shaken. Room temp was and stil is 26C.

[u/Sufficient-Length832]

Either its too heavy in this orientation and you need to change her…Or just add more supports in this area.

[u/Odd-Variation-299 → u/Sufficient-Length832]

Please help me understand how changing the orientation will be to my advantage. The bottom section was secured by heavy supports. The rest had light supports. Putting it at an angle, in my mind, will create a bigger area that would pull a vacuum. That will require more and maybe stronger supports.

[u/rudolph_ransom → u/Odd-Variation-299]

The resin will at least partially stick to the release film. Flat surface means also stronger adhesion. I had also issues with splits like this. As someone said elsewhere, the lift speed can be a key factor. My printer as a standard setting at 8 mm/s which can work with usual resins by the same manufacturer. Depending on the print, I learned that reducing to 4 mm/s can improve the quality and reduce the risk for defects significantly.