Balance when turning wet bowl blanks - Woodworking Talk - Woodworkers Forum
 
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post #1 of 4 Old 01-05-2011, 12:26 AM Thread Starter
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Balance when turning wet bowl blanks

I've rough turned almost a dozen bowls now and I've often noticed that there is still a fair amount of vibration from the blank even after the shape is pretty round. I've also noticed that some surfaces of the bowl feel wetter to the touch. Is it likely that the water weight is unevenly distributed in the wood which would account for the vibration? Any other likely explanations?

Steve
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post #2 of 4 Old 01-05-2011, 02:28 AM
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Yep, you hit the nail on the head. Was that piece sitting partially submerged in water for a while?

Harrison, at your service!
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post #3 of 4 Old 01-05-2011, 08:44 AM Thread Starter
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I should have said very green instead of wet, so it hadn't been submerged, but the log might have been lying on its side.
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post #4 of 4 Old 01-05-2011, 04:36 PM
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Wood dries out pretty unevenly especially if it's laying on it's side. Wood can also vary in density which will also throw a piece off balance. If it's been sitting very long it can start to rot so the rot area will also be much lighter than the rest of the wood.
Basically there are a lot of things that make a piece of wood be out of balance or vibrate. How far it sticks out from the lathe or chuck, how far the chuck sticks out beyond the headstock, even knots in the wood are heavier than surrounding wood.
That's why we tend to buy lathes that are more massive. They can absorb that vibration.
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