SL1S Tank FEP screw T9 key aligner

A tool to help you align the T9 key when replacing a FEP foil on your SL1S resin tank.
Other than that, the #1 advise for a painless FEP replacement is: get WERA 05028032001 TX8IP screwdriver.
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Printable on both MSLA and FDM. Works fine when printed either from 3DM ABS-like resin or PETG plastic.

The other weird-shaped object is a SL1S boost board external PSU plug aligner to help you 1. connect the PSU to the printer in the correct orientation and 2. guide your hand when reaching behind the printer to turn the printer on or off with the rear power switch. If you are doing the SL1S upgrade, you might consider printing this version of the INPUT_COVER instead of the supplied one. Just a warning: it might be a tight-fit on some of the oldest SL1 printers.