shelves in upper kitchen cabinets - design

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Forum topic by Ben posted 307 days ago 534 views 0 times favorited 4 replies Add to Favorites Watch
View Ben's profile


203 posts in 1489 days

307 days ago

Hi all,
I’ll be building my uppers pretty soon. I have a few where the doors will close into each other – no center stile- and thus about a 30” span on the shelves.

I don’t think 3/4” ply with an edging is going to span that. So would it be crazy to make my shelves out of solid stock? And how would I best join the shelves to the plywood carcass sides?
If I do shelf pins, won’t they cup? Just loose in a dado?

Or maybe small cleats above and below the shelf screwed into walls that capture it and allow it to expand/contract?


4 replies so far

View Bill White's profile

Bill White

3413 posts in 2592 days

#1 posted 307 days ago

On the 30” shelves, use ply ‘cause solid will warp for sure. If possible, drill the center of the cab back same as the sides so you can put a shelf pin in the back for support. Won’t be as good as having the support front and back, but better than nothin’.
I’ve never had a shelf pin cabinet fail if the holes are drilled correctly.


View cabmaker's profile


1309 posts in 1441 days

#2 posted 306 days ago

3/4 ply, 30 inch span, No problem!

View Mark Kornell's profile

Mark Kornell

482 posts in 1163 days

#3 posted 306 days ago

The Sagulator says 0.01” total sag (0.004” per foot) for plywood over the span of the shelf. No worries.

-- Mark Kornell, Kornell Wood Design

View Loco's profile


210 posts in 381 days

#4 posted 306 days ago

One meter. 8 years. No warp.Sitting on 3/4 cleats. 3/4 solid mahogany.I don’t know that I’d try it with Disneywood(glued scrap).
Yes. T&G in back and on top. Don’t all “custom” builders do that ? ;-)

-- What day is it ? No matter. Ummmm What month is it ? No moron. I paid for a 2 x 6. That means Two inches by six inches. I want the rest of my wood.

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