Cincinnati
Member
My pre-teen boys and I have been turning pen kits for a few years. Occasionally we get oval barrels or barrels off center from the tube. I switched from a tapered mandrel to a collet mandrel. Then replaced the rod. I got a few round and concentric barrels. then I let my boys turn and we seem to go back to oval barrels. What is causing this?
My guess was possibly too much pressure on the tail stock causing the mandrel rod to flex. Or bending the rod while loading or unloading the pen parts, bushings, Anne tightening or removing the retaining nut.
How do I correct and prevent this?
My guess was possibly too much pressure on the tail stock causing the mandrel rod to flex. Or bending the rod while loading or unloading the pen parts, bushings, Anne tightening or removing the retaining nut.
How do I correct and prevent this?