Plastic carbonating cap wrench
thingiverse
I picked up some plastic carbonating caps on amazon and found they could be really slippery when pulled stright out of the fridge. I made this tube wrench to make it easier to remove them. There is a short version which just covers the cap, and a larger one that fits my hand better. The caps I based this on: https://www.amazon.com/dp/B0BJPQCH9G?psc=1&ref=ppx_yo2ov_dt_b_product_details They have approxamately a 19.5mm hex on the top and I set it to 20mm to account for a little slop.
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