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Vase and the pith question (Read 345 times)
 
Ken Davis
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Vase and the pith question
Jun 26th, 2017 at 11:31pm
 
Im sure this has been asked, but I am search function challenged. Ive seen videos of people turning a vase or hollow form out of a log and wondered what they do about the pith. Do you leave it in and if so, how does it not split or check the wood. If not how do you go about getting a big enough piece to make a large size vase or hollow form.
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Jurriaan Kalkman
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Re: Vase and the pith question
Reply #1 - Jun 27th, 2017 at 1:32am
 
It depends on the wood and the thickness of your vase.

I've had no problems with the pith in tough, not too prone to splitting woods like elm, london plane or black locust.

On the other hand, I've had massive problems with oak and my specially prepared (boiled) apple wood vase did split some as well.

If you manage to get a very thick tree, a vase without pith will often dry to be oval. With the pith, it will dry more round.

Just try for yourself, a lot depends on your wood and your drying climate. After all, woodturning is fun, right?
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robert baccus
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Re: Vase and the pith question
Reply #2 - Jun 27th, 2017 at 10:07pm
 
I do mostly vases, SW pueblo pots, urns and hollow forms.  The pith always(almost) goes in the middle.  However I do CA glue the bases to a glueblock/Ring faceplate with plenty of glue.  I lose one every 25 or so but mostly no problems with the mount or pith.  You can always drible a bit on the pith from inside and outside before drying the piece.  Might try it yeah.
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Dave Delo
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Re: Vase and the pith question
Reply #3 - Jun 28th, 2017 at 5:47pm
 
Ken,

I twice turn the vases I make. After parting off, I coat the pith both inside and outside with CA glue. I do mostly cherry and haven't lost any yet. Good luck.
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« Last Edit: Jun 28th, 2017 at 5:47pm by Dave Delo »  
 
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Ken Davis
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Re: Vase and the pith question
Reply #4 - Jun 30th, 2017 at 2:35pm
 
Thank you all for the replies, will try using ca on the pith
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Don Stephan
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Re: Vase and the pith question
Reply #5 - Jun 30th, 2017 at 7:02pm
 
Dave

If I understand your post, you rough turn the vase, let it dry, turn it a second time, remove the tenon (part it off), and then coat the pith with CA?  I would have expected the wood to be stable at that point, since it was completely dry.     Did you experience cracking at the pith on twice turned work, and then started coating with CA?  Just curious.
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Dave Delo
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Re: Vase and the pith question
Reply #6 - Jun 30th, 2017 at 8:30pm
 
Don,

Sorry for the confusion. I put the CA glue on after I part-off the piece after the first turn. Then the piece goes on the rack to dry.
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