Propane Bottle Wrench (German Bottle) - more massive

The original design works, even with some more force than generally needed. But as an engineer I like to have more reserve. So I just added a ring to the center piece.

The picture shows the original and the modified tool.

I added another version (03). I found that a hole can be useful for fastening it somewhere. I also rounded a sharp edge.

I always wanted to do an open version of the key which can be used on mounted bottles. Fortunately I don't need to -> https://www.thingiverse.com/th