According to the article the spiral is used to clean the shank or stem.Looks like something that would get you out of Alcatraz. I have seen something very similar to that ages ago. It looks very useful although what the drill is used for I have no idea.
...what the drill is used for I have no idea.
Just like the drill bit on a senior reamer.According to the article the spiral is used to clean the shank or stem.
I once pulled the head off of a cotton swab inside the shank of an estate pipe I was cleaning. I was able to easily remove it with a drill bit.According to the article the spiral is used to clean the shank or stem.
I frequently advocate the use of small drill bits or jeweller's screwdrivers for that purposeAccording to the article the spiral is used to clean the shank or stem.