AA to D battery adapter
Hole is sized for an M3 or similar screw, length between 8-11mm should be good
Print with support, only for the base, overhangs print without support
You will probably have to flip the "AAtoD-M3Screw" to be the right way to print with minimal support.
AAtoD-M3Screw.stl | 3.8MB | |
AAtoD-Spacer.stl | 3.6MB |