Bug-A-Salt Replacement Plunger
thingiverse
My Bug-A-Salt version 1 had a broken plunger so I designed and printed a new one. The plunger is printed in 3 parts and uses the gaskets from the original plunger. You will need a 30mm M3 screw (1/8" is very close) and matching Nylon Lock Nut. This version is sturdier than the original and compresses the spring about 10mm more so you get a slightly stronger shot. OpenScad source included if you need to make some tweaks. I am not sure if this will work for any version other than version 1. I recommend printing this in PETG 100% infill and while you have it apart, lube it up with lithium grease. Thingiverse refuses to render thumbnails of the models so I am attaching a picture.
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