Parametric sewing bobbin canister

Parametric bobbin canisters to keep thread from getting tangled.

The default settings are for the Singer 4423 Heavy Duty Sewing Machine bobbins.

The screw threads are very fine in order to work best with the small size of a bobbin, but the canister can be resized to any size your printer can print. As a test, I also printed one to hold one of my larger spools of thread without any problems.

Because of the fine detail, this should only be printed on a resin printer. If you use a removable magnetic build plate, this can be printed directly on the bed with no supports or rafts.