Join Date: Jan 2011
Location: Jacksonville, NC
On wood lathes vibration/resonance can occur at different frequencies or miss-matched or worn parts. Sometimes can reduce speed or take lighter cuts to reduce or eliminate problem.
No one can tell tailstock a problem from what you have posted. Not saying you do not have a bad tailstock, but would like to rule it in or out with simple test.
Do you get vibration turn wooding between centers? Use a piece of wood, and spur center, live center that came with your lathe. (fig. 5 in owner manual) I would use both small and large tool rest and different lengths of wood. Run through speed range while turning.
Goal here is to pinpoint where vibration/resonance coming from. (speed, depth of cut, cheap aftermarket parts, or worn parts)
Next use 60- degree live center you bought to make pens.
Mandrels another consumable piece of turning gear. Once bent replace!
The amount of pressure applied should be just enough to stabilize the mandrel shaft and minimize vibration from the turning activity. Too much pressure
bends the shaft or causes vibration.
Many turners stopped using mandrels and use dead and live centers.
Inexpensive 60- degree live centers sold to pen turners notorious for problems.
A crooked live center point will also cause the mandrel to operate eccentrically and cause vibration. Check for wear spots or distortion in dimple at end of mandrel shaft.