Floating 3-inch chlorine tab dispenser

This floating dispenser holds 3-inch trichlor tablets. It will hold 5 or 6 tablets, which is needed (along with another dispenser) here in Florida.
After about 8 months the integral float chamber started to take on water but was still floating. Printed using white PLA. FreeCAD source included.

PLEASE NOTE: when you initially load this with tablets, do not try to screw in the cap all the way. Leave about 1/8" (3mm) so it will be easier to unscrew. Otherwise as it sits and gets dirt and grit it becomes hard to unscrew. The cap is sized so that you can actually fill the dispenser all the way to the top with tri-chlor tablets - the cap will fit around the tablets.