Prusa Research Original Prusa SL1, Manual

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4. Electronics & Lid
70 Original Prusa SL1 kit assembly
STEP 38 Preparing the FEP film
WARNING: the following procedure is crucial. Make sure you read the instructions
first! The FEP film consists of three layers. Two layers are for the protection of the
middle layer, which is the actual FEP film.
Separate all layers slightly apart to recognise them:
Semi-thick outer layer (protection)
Thick inner layer (FEP film)
Thin outer layer (protection)
FIRST , remove completely the SEMI-THICK outer layer. Make sure all the circular
holes are free of the remains of the film.
Only after you have successfully removed the thick layer and the "circular" remains,
remove the THIN outer layer.
You should end up with the middle layer, which is without both outer layers. Also,
double-check you have removed all the remains.
STEP 39 Preparing the resin tank frame
Carefully place the FEP film on the frame and on the screws, use them to stretch
and align the film.
Carefully rotate the frame upside down.