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Gluing solid shelves into dado

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Forum topic by BenDupre posted 03-06-2017 07:06 PM 530 views 0 times favorited 7 replies Add to Favorites Watch
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BenDupre

531 posts in 322 days


03-06-2017 07:06 PM

Hi Lumberjocks, quick question, is this a cross-grain glue up and if so, how would you handle it. I need the ears on the shelves to stay tight to the rails. Material is Cherry.

Thanks

-- The problem with communication is the illusion that it has occurred. – George Bernard Shaw


7 replies so far

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papadan

3584 posts in 3203 days


#1 posted 03-06-2017 07:09 PM

I would use tightbond 3, clamp the sides and place some weight on the faces to hold them tight to the sides.

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pintodeluxe

5459 posts in 2648 days


#2 posted 03-06-2017 07:58 PM

The parts look quiet narrow, so I wouldn’t worry about expansion and contraction here. It looks to me like any movement will be matched by the adjoining piece, so I don’t see any issue.

Just use spring clamps or quick clamps to hold the ears down, then add parallel clamps from underneath to close the joints.

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

View Fred Hargis's profile

Fred Hargis

4756 posts in 2328 days


#3 posted 03-06-2017 08:42 PM

It looks to narrow to me to be a problem, how wide are the sides?

-- Our village hasn't lost it's idiot, he was elected to congress.

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BenDupre

531 posts in 322 days


#4 posted 03-06-2017 09:46 PM

Fred: The sides are 2 inches. I think you are right.

-- The problem with communication is the illusion that it has occurred. – George Bernard Shaw

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jerryminer

800 posts in 1276 days


#5 posted 03-07-2017 06:23 AM

Besides the fact that the pieces are narrow, all the wood movement is going in the same direction on all the pieces, so, no, it is not a cross-grain situation.

The issue you might have is keeping the dado joint tight, as this is all long-grain-to-end-grain joinery. Clamp it well—and maybe add a few fasteners. Will it have a back, or something to keep the sides from spreading?

I envision a low-stress use (spice jars?) so it’s probably fine, but a couple fasteners would buy some insurance.

-- Jerry, making sawdust professionally since 1976

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TungOil

744 posts in 330 days


#6 posted 03-07-2017 12:56 PM

It’s not a cross grain glue up so you should be fine.

interesting piece, what is it?

-- The optimist says "the glass is half full". The pessimist says "the glass is half empty". The engineer says "the glass is twice as big as it needs to be"

View BenDupre's profile

BenDupre

531 posts in 322 days


#7 posted 03-07-2017 01:06 PM

Thanks lumberjocks. It is a display shelf for small bottles of essential oil. About 14×12. I glued it up last night and clamped across the width. All the ears were tight. I tapped one of the down. Gouldnt figure any smart way to clamp the ears so i just left it. I used tight bond III and appears to be solid now.

I put a little natural Danish Oil on it. I am spraying satin laquer over that.

-- The problem with communication is the illusion that it has occurred. – George Bernard Shaw

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