Thermacell Refill Protection
thingiverse
I have mount Ronson Type (Varaflame) Quality Filler Inlet Valve. https://www.ebay.com/itm/Ronson-Type-Varaflame-Quality-Filler-Inlet-Valve-Tool-5-Valves/263561289284?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649 Press the ball into the bottom, use 3.5-4mm mm drill and thread the Ronson M4.5 valve and insert some glue into the threads. You can fill up when the tube remains in the thermacell. (obviously turned off ;-) Wear safety goggles when filling! The protective hats are good to use then.
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