This is the interior part for a E21384 bay window lock (the pins break too easily and don't close the bay). We replaced this thing by another one that cost him almost 30€ and broke again in less than a year. So i tried to design one a bit stronger that will last longer (i hope)

Supports needed.

100% infill

print with visible face up (last pic) for a better finish with smoothing enable in prusaslicer (but many supports and more or less +1 hour of print)

print with visible face down the bed (3rd pic) for less supports and faster print

Might be needed to scale the whole thing down, it fits tight.

PLA isn't strong enough