This is one of the tools I was introduced to during the course with Stuart Batty - basically a VERY sharp point, used to clean the bottom of notches (such as between two beads or a bead and a fillet, on a spindle turning). It's a 10mm diameter cylindrical rod of HSS, ground to a semi-cylinder at the end, and then sharpened to a point at about 20 degrees. I'm keeping things safe when it's not in use by capping it with the cork from a bottle of Scotch.
The handle is ziricote, and the ferrule is half of a 3/4" copper pipe coupling.
The handle is ziricote, and the ferrule is half of a 3/4" copper pipe coupling.