Battery Cover for SimpleHuman trash can

This is a replacement battery compartment door for a SimlpleHuman(tm) garbage can
with a motion sensor to open the lid. The can uses 4 D cells in two groups of 2. This door will retain two of the batteries.

I reused the battery contact spring off of the old door. I had to coax/cut it out of the old
lid. It fits nice and snug into this one. I tried to get a "lip" to print as a
retainer for the spring, but the feature did not print despite it being in the stl
file. The ridges that