|Forum topic by jayman7||posted 12-27-2009 04:52 PM||1637 views||0 times favorited||5 replies|
12-27-2009 04:52 PM
I’ve been having a great time turning pens with my new PSI lathe. I’m slowly learning about the world of turning. Only problem is the pens aren’t exactly centered. Part of the wood is flush at one part of the bushing, but 180 degrees around the other side of the pen, the wood protrudes away from the bushing. I checked the headstock and tailstock and they line up perfectly. I tried a slimline bushing and fountain pen bushing and they both have the same problem, so it has to be the mandrel. This problem happens predominantly at the center bushing and not at the end bushings. But I’m not tightening the knurled nut or pushing the live center in too much either; I’m using light pressure.
Anyone have any ideas? Maybe I need a new mandrel?
I’ve been using this mandrel from Woodcraft:
Maybe this mandrel doesn’t have that problem. What does it mean by “self-centering?” How does that work?