APS film holder for flatbed scanner

This is a holder for scanning analog APS film (24 mm wide) on a flatbed scanner (it is designed to work with an Epson V700 and similar models (10 mm between the glass surfaces)).

Instructions:
There is a file with all pieces positioned properly that should be ready to print.
Supports are necessary, as well as a high-quality setting (I used the 0.1 mm quality setting in prusa sliceer) This is a high-precision model. The height/width of the film slit is 0.3 mm.

Notes:
The end piece has to be mirrored and printed twice.
3 bottom pieces and 2 upper pieces needs to printed.
Note that the bottom piece has to be printed on the very narrow face, with the slit pointing upwards. 
A strip of 6 APS film frames are slid into one of the bottom pieces. The other side of the film simply rests on the piece on the opposite side.
The upper piece fits ontop of the opposite side bottom piece and needs to be weighted down by the scanner lid. Attaching some soft foam cushions on top of it is recommended.
The purpose of the upper piece is to clamp down on the film on one side and make it less curvy.

Update: I added a "symmetric" end piece that allows to use two “under body” pieces to slide the film into.

The film will be located at 3 mm height. I've found 3.2 mm to be the optimal height for my V700 scanner. Attaching some small distances to the bottom is recommended.