Chem Guys Big Mouth Foam Cannon Lid Fix

thingiverse

This is my second attempt to fix this Chemical Guys Torq Big Mouth foam cannon whose lid design is so totally defective it won't stay on. The lid only threads on about 1/4 of a turn so there is not enough thread engagement to keep it on. Bump it? It comes off. Set your wand/foam cannon down on the driveway, the lid comes off, spilling your soap all over the place. My first solution, the little pin to keep the lid from loosening was not totally successful. I had it come apart once with that in place when I put the thing down on my driveway. The plastic canister is so flexible and there is so little thread engagement it can pop off even without unscrewing. First, if you bought one of these I recommend you return it. If you can't do that then here is the fix. Print the top and base pieces. The top snaps onto the foam valve and the base is a press fit to the bottom of the canister. You could also use some mounting tape to keep the base in place. Then run a 24" velcro strap (the kind that you loop through and stick back to itself) through the slots to secure the top to the canister. Light duty velcro straps work best, a heavier one will also work but is overkill. These work perfectly: https://www.securecableties.com/24-x-1-inch-cinch-straps-5-pack. The base also has some feet that make it stand up better when you set the wand and cannon down on your driveway. This is a good foam cannon when the POS lid stays on. Happy washing!