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Cracked butcher block10/29
Installed a 4" thick x 25 x 30 end grain butcher block in a kitchen with an oil finish from boos block. Did not screw it down. It has split along a glue line I think this a problem with the pieces of wood not all being at the same moisture content during glue glue up. Any thoughts as to why it's splitting?
What does Boos say? Send them a photo and ask their opinion.
If it were properly glued, then it should not fail. I have to think Boos knows what they are doing.
The only other thing could be a wide fluctuation in environmental humidity - like a long wet storage period followed by blasting with a jet heater.
Can you measure the moisture content?
What David said
Could be a number of things. Boos is a good company, and produces a lot of butcher blocks. This is bound to happen every once in a while. I would be surprised if they won't take care of it.
Well if it is along the glue line and this could be because of the glue drying up or the changes in temperature leading the glue line to get exposed and causing the breakage.
I've had butcher blocks split and separate due to moisture loss. I just flooded the block with mineral oil and kept adding, as long as it soaked in. Then I slathered on one last coat. Over a couple weeks, the oil wicked deeper into the wood cells, expanding them, just as moisture does. In the end, every crack and separation disappeared.
Of course, unlike moisture, mineral oil won't evaporate or cause deterioration. Rather, it will deter it. Too, because the mineral oil is a non-hardening oil, it leaves no surface coat and just wicks cell to cell.
When there was time to allow off-gassing of the thinner, I've used turpentine to speed penetration.