Light block for 5 position 1.25 manual filter wheel

thingiverse

This is a simple solution to the light leak problem that these manual 5 position 1.25" filter wheels have. The light leaks around the adjustment cutout and can reach the camera via either the bottom or the top. The semi-circle is supposed to be double-sided-taped between the wheel itself and the bottom part of the casing, just inside the lip (photos below).The other place light can leak through is between the top half of the case and the hole. I've designed another plastic lip that has enough clearance so that the wheel does not rub on it, but blocks enough light.