My lids have flipped...well cupped.

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Blog entry by mnpete posted 02-03-2012 11:21 AM 1004 reads 0 times favorited 4 comments Add to Favorites Watch

These box lids that I built last summer in Minnesota have cupped over the past couple months here in Denver.

-- Follow my woodworking adventures in The Second Wind Workshop,

4 comments so far

View stefang's profile


15881 posts in 3389 days

#1 posted 02-03-2012 02:38 PM

I think it is possible that the handle is what made your lid cup like that. I had a similar problem with a lid I had glued a handle on. It doesn’t take much extra tension on one side to cause cupping. My handle was also aligned with the grain and held in place with dowels as yours are. This is the only box among many that I have had that problem with.

-- Mike, an American living in Norway.

View Jimthecarver's profile


1124 posts in 3840 days

#2 posted 02-03-2012 04:05 PM

The area of the top exposed to the elements opposed to the bottom contained in a sealed state may have an impact. But looking at the grain direction and the fact that both are probably cut from the same board, I would lean more tword the attachment of the handle, expansion and contraction of the different woods being used. Because the one that is attached in the middle is only slightly cupped opposed to the outter edge attachment.
I wonder if the openess of the pores would have anything to do with it?
Good question.

-- Can't never could do anything, to try is to advance.

View mnpete's profile


226 posts in 2712 days

#3 posted 02-03-2012 04:44 PM

Good insights guys. I wonder if I had placed the handles in an orientation of 90 degrees to the top lid piece…hmmm. It would have changed the look a bit though.

I was planning on making a couple more boxes like these, except more rectangular rather than square. I’ll have to rethink a bit.


-- Follow my woodworking adventures in The Second Wind Workshop,

View lawronkluve's profile


2 posts in 2360 days

#4 posted 03-27-2012 06:00 AM

Great work,I hope you will add some more similar stuff here.

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-- Lawron M Kluve

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