That's a clever tool! The only place I seem not to have arthritis is in my hands. Go figure. I use some big needle-nose pliers to open the glue bottles. Interestingly enough (or not), I've started buying wood glue in 8 oz bottles. I'm not that prolific with projects, certainly not enough to warrant a larger container that's going to dry up before I can use it all.
I have arthritis bad in my knees. I'm being told to take those pain relievers, but only do so when the pain is way up there. I'm going to try the collagen(?) shots next time. Using cortisone shots for bone on bone is kind of stupid, in my book. At least I have a high threshold of pain. 🙄