My dad has an old "Barkbuster" wood splitter, it takes a PTO from a tractor and drives a cone, about a foot long which has a 1 or 2 tpi square cross section (maybe 1/4" square) thread along its length. The idea is the cone screws itself into the wood, splitting it. It works really well, but over the years the tip has worn to the point where it won't bite. He got it back working after a fashion by building up the tip with an arc-welder and regrinding the point and first turn or two of thread- but its a temporary fix.
Since about 4" of the tip of the cone is theoretically replacable (assuming the rusted solid pins can be removed, etc), he was wondering if a new tip might be turned on his SB 9".
He thinks the angle of the cone is about 10 degrees off the centerline. The length is about 4". The thread cross-section doesn't really need to be square, but it does have to be pretty deep and it is
1 to 2 tpi. He thinks the 2 problems are be getting his SB geared for the threading and managing the taper (he doesn't have a taper attachment), and was wondering what others might think of the problem.Thanks,
Gregm