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Old 11-30-2011, 04:05 PM   #1 (permalink)
Join Date: Mar 2011
Location: Lodi, Ca
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Default off center turned blanks


I have only been turning pens for about a year now. Recently I have noticed that the last few blanks I turned have been off center. Meaning thin on one area and thick in another. I am wondering what could be the cause of this. I have a strait mandrel. If anyone could offer any insight I would appreciate it.
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Old 11-30-2011, 04:15 PM   #2 (permalink)
D.Oliver's Avatar
Join Date: May 2011
Location: Faith SD
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Is it possible your are tighting the nut down too tight and causing the mandrel to flex?
Derek Oliver

Penturning - Its basically taxidermy for trees.
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Old 11-30-2011, 04:34 PM   #3 (permalink)
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Join Date: Dec 2010
Location: woodland, wa
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If you are certain your mandrel is not bent; Derek is right about tightening the nut excessively. There is another possibility; when you set and then tighten your tailstock, it is easy to over-tighten and bend the mandrel. When you loosen the tailstock to remove the pen, the mandrel will return (material memory) back to straight.
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Old 11-30-2011, 04:44 PM   #4 (permalink)
Join Date: Mar 2011
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It is very possible. I have never thought about that, I am going to loosen it up and see if I can true it up. thanks for the replies.
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