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Why did this piece of walnut split and how to spot it in the future?

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Forum topic by Dagobah posted 11-16-2016 06:33 PM 1013 views 0 times favorited 8 replies Add to Favorites Watch
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Dagobah

70 posts in 498 days


11-16-2016 06:33 PM

Picked up some 8//4 walnut that had a 3” crack in the bottom. Cut that piece off plus a little extra and used the rest to make an end grain cutting board. Little did I know the crack went much further through the board than was obvious. Here’s a pic:

I was still able to make the cutting board, albeit a much smaller one than intended. How can I spot this in the future?


8 replies so far

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diverlloyd

2331 posts in 1692 days


#1 posted 11-16-2016 07:07 PM

Looks like it wasn’t dry.

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Dagobah

70 posts in 498 days


#2 posted 11-16-2016 07:17 PM

Sorry, I might need to clarify. The walnut was from a dried board I bought from a lumberyard. This pic is after milling, and after the second set of cuts. Only then were the cracks visible.

I ended up taking the non cracked pieces to make the final cutting board after this pic was taken. It wasn’t a finished board that cracked after the fact.

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Aj2

1174 posts in 1633 days


#3 posted 11-16-2016 07:35 PM

Sometimes you just got to keep cutting off the end of the board till your absolutely sure the checking has ended.
If the wood has been dried properly 3 inches should get it.But it’s not uncommon to cut as much as 6 esp on walnut that has figure near the end of the board.

Aj

-- Aj

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diverlloyd

2331 posts in 1692 days


#4 posted 11-16-2016 07:44 PM

Dried board from the lumber yard? Did you check the moisture content after you cut it it may have not been dried all the way through.

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Firewood

164 posts in 1469 days


#5 posted 11-17-2016 04:17 AM

It looks like it could be caused by case hardening. Here is a link to an article on it.

-- Mike - Waukesha, WI

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Dagobah

70 posts in 498 days


#6 posted 11-17-2016 05:34 AM



It looks like it could be caused by case hardening. Here is a link to an article on it.

That does look very similar. It was unsteamed walnut.

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Aj2

1174 posts in 1633 days


#7 posted 11-17-2016 03:06 PM

If your wood was not dried right you would if had a miserable time milling it.
Case hardened wood will warp and twist with every cut.
If those cracks appeared in the middle of your boards bring back what you have left to your wood monger.

Aj

-- Aj

View rwe2156's profile

rwe2156

2711 posts in 1316 days


#8 posted 11-17-2016 03:41 PM

Looks like checks that extended into the board. They can also simply be cracks. I had some hard maple beams once that had cracks the extended for 2-3 feet which did not become noticeable until the milling started.

To check for checking ;-) make repetitive 1” cuts off the end and stress the wood to see if it cracks. You can do this by bending, striking or tapping with hammer.

-- Everything is a prototype thats why its one of a kind!!

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