Ballast Bag Plug fits 3/4" FatSac

thingiverse

This is a remix to add a larger thumbwheel to a 3/4 NPT plug to match the plugs for my Fat Sac ballast bags. The gap between the threads and the cap/knob is for an O ring but it works without the O ring well enough for my application Additionally the quick coupler for using a tsunami pump for filling bags, the internal lock bump can be made more durable by drilling it out and epoxying in a piece of 2 or 3 mm rod. There is a groove for an O ring as soome water will leak out when under pump pressure without an O ring. The coupler was scaled to 102% in CURA before slicing to compensate for PETG shrinkage