FEP Film (fluorinated ethylene propylene) is the barrier between the LCD screen and liquid resin. It is a consumable part of 3D printing. It is also the most finicky aspect of 3D printing due to tension levels.
Damaged FEP
Yes, this highly precision machine and the vat it uses is adjusted by a bottle cap.
FEP tightened before being trimmed
New and Old FEP compared
