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Improper grain direction?

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Forum topic by Andrew714 posted 07-11-2017 02:15 PM 611 views 0 times favorited 7 replies Add to Favorites Watch
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Andrew714

22 posts in 1275 days


07-11-2017 02:15 PM

Topic tags/keywords: question joining walnut maple

Hello,

I made a cutting board a while back, and some of the joints at the corners have started to open up (see close-up photo). My theory as to why, is because I have the grain throughout the cutting board running vertically, but on the edging it is running horizontally, which causes the different parts of the cutting board to expand and contract differently. Can anyone confirm that this is the case, or give me any other thoughts you may have?

Thanks,

Andrew


7 replies so far

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sras

4799 posts in 3129 days


#1 posted 07-11-2017 02:59 PM

You’re correct. To prevent this, the border needs to be end grain as well.

-- Steve - Impatience is Expensive

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Andrew714

22 posts in 1275 days


#2 posted 07-11-2017 03:20 PM

Thanks Steve. I’ll just need to rebuild the border then.

Andrew

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bondogaposis

4727 posts in 2351 days


#3 posted 07-11-2017 03:26 PM

Yes, wood expands in width but not in length. Trying to confine the movement of an end grain board with a long grain border is the mistake. The fix ix is to make the border end grain as well. You can easily salvage this by cutting off the border. Remember that cutting boards get washed repeatedly so are continually experiencing movement with frequent wet/dry cycles.

-- Bondo Gaposis

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gargey

981 posts in 775 days


#4 posted 07-11-2017 03:45 PM

Yep. It never had a chance.

View Carloz's profile

Carloz

1147 posts in 591 days


#5 posted 07-11-2017 03:55 PM


Thanks Steve. I ll just need to rebuild the border then.

Andrew

- Andrew714


Do not rebuild it, just cut it off. Will look better and no issues with expansion.

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Andrew714

22 posts in 1275 days


#6 posted 07-11-2017 04:23 PM


Do not rebuild it, just cut it off. Will look better and no issues with expansion.

- Carloz

I guess I didn’t specify, I was intending to cut it off and rebuild it as end grain instead of edge grain.

Thanks :)

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WDHLT15

1743 posts in 2475 days


#7 posted 07-12-2017 11:59 AM

This is a cross grain situation. The end grain portion of the cutting board is expanding and contracting in one direction while the border, although thin, is expanding and contracting in the other direction. In the pic, the end grain portion of the cutting board swelled, but the long grain border did not allow for that, and the joint had to pop open to relieve the stress. You see the same situation with tabletops with breadboard ends. The breadboard has to allow the top to expand and contract seasonally, otherwise your tabletop will crack to relieve the stress.

-- Danny Located in Perry, GA. Forester. Wood-Mizer LT40HD35 Sawmill. Nyle L53 Dehumidification Kiln. hamsleyhardwood.com

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