Does this happen to you? Okay, so the picture is not very good, but bear with me.
Often when I am tatting for a while the thread wears ridges into my middle or ring fingers, or my pinkie when doing split rings, and that can be painful. I've tried those commercial plastic things you slip over your finger, but they never stay in place for long, and the thread never stays on them anyway. So, I made my own finger guard.
I've been using