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Segmented bowl base ring cracks??

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Blog entry by poospleasures posted 03-10-2014 01:46 PM 820 reads 0 times favorited 7 comments Add to Favorites Watch


I ask for your comments and suggestions about a opportunity (problem) with a couple similar bowls. Both made from walnut and maple. One about 11 1/2” other 13”. History—have been doing segmented bowls for just over a year with this cracking only on these two. I hope you can see the two joints with the yellow circles. Those joints separated by appx. .0003th of an inch. If held up to a light you could see through. These were made the same way as almost all the bowls I’ve made. Twelve segments per ring, glued with regular Titebond yellow glue, clamped with large hose clamp until dry, then flattened before gluing to waste block and other rings. The dark dot in the center is a piece of 1/4” dowel in a 1/4” hole to clean up the sharp points of the segments. The cracks run from the dowel to the outer edge of segment where it joins with the next ring. I have repaired with CA and sawdust forced into the cracks and sanding and refinishing. I’m sure you will come up with some good ideas and suggestions so thanks in advance. Just maybe someone else has is experiencing this and it would help them also.

-- I love the smell of sawdust in the morning. Vernon



7 comments so far

View Roger's profile

Roger

14566 posts in 1458 days


#1 posted 03-10-2014 09:38 PM

Wow, Vernon, that’s a beauty.

-- Roger from KY. Work/Play/Travel Safe. Kentuk55@bellsouth.net

View doubleDD's profile

doubleDD

2457 posts in 697 days


#2 posted 03-11-2014 01:01 AM

Wish I could help but still a newbie to segmented turning. Nice work on this one. I’m sure someone will have a solution.

-- --Dave, Downers Grove, Il. When you run out of ideas, start building your dreams

View tomd's profile

tomd

1756 posts in 2425 days


#3 posted 03-11-2014 04:56 AM

This is a difficult bottom to pull off, pie shaped pieces tend to pull apart. If you are very interested in segmented turning might I suggest ” The Art of Segmented Turning ” by Malcolm Tibbets, he shows several ways to correct this problem. Also it is a must read for segmented turners it contains a wealth of information and is very inexpensive. I posted a few pieces I’ve done after reading his book.

-- Tom D

View kiefer's profile

kiefer

3070 posts in 1321 days


#4 posted 03-11-2014 12:46 PM

Vernon is the dowel the problem ?

-- Kiefer 松

View branch's profile

branch

905 posts in 1809 days


#5 posted 03-11-2014 10:16 PM

hi with a bowl that size you need to make the bottom a floating one the are too much movement it the wood

branch

View Roger's profile

Roger

14566 posts in 1458 days


#6 posted 03-11-2014 11:24 PM

I didn’t read this right Vernon. Sorry bout the crack problem. I don’t have any answer unless the Walnut wasn’t completely dry… I don’t have any other input. Sorry buddy.

-- Roger from KY. Work/Play/Travel Safe. Kentuk55@bellsouth.net

View poospleasures's profile

poospleasures

339 posts in 1138 days


#7 posted 03-12-2014 12:45 AM

Thanks Roger
doubledd I hope we can both learn from this bad experience
tomd thanks a bunch, I going to order Tibbets from Amazon in a few minutes
keifer I don,t think the dowel is the problem, I guess it is wood movement as most of the guys advise
branch I’m ordering the book and watching Utube to find out how to do a floating bottom, Thanks for advice
Roger With the advice I,m getting is has to be wood movement, most of the wood I use is kiln dryed and usually stays in my dry shed for a couple more years. But some times people give you pretty wood with no history and I may have used some of that.

-- I love the smell of sawdust in the morning. Vernon

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