Can joined wood planks make a sufficent stock?

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Forum topic by Mitchmor posted 03-18-2014 09:48 AM 795 views 0 times favorited 7 replies Add to Favorites Watch
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16 posts in 1014 days

03-18-2014 09:48 AM

Hi LJ Community…
Joined 1×6 planks for example…
Would joined planks hold up as a singular stock that can be cut at will (such as with MDF and ply) ?
Of course assuming they were properly planed, glued etc.

I ask this mainly terms of a stock for a CNC router.

Any tips or insight is appreciated…!

7 replies so far

View Fred Hargis's profile (online now)

Fred Hargis

3848 posts in 1916 days

#1 posted 03-18-2014 11:04 AM

It’s often said, and I believe, that a proper glue joint is stronger than the wood itself. Tests seem to prove this, since a glue joint will typically not break…the failure occurs in the wood itself. So I’m thinking the answer to tour question is “yes”.

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

View Mark E.'s profile

Mark E.

387 posts in 3165 days

#2 posted 03-18-2014 11:04 AM

Sure. Properly edge glued panels are just as strong as a solid wood panel. The glue joint is actually stronger than the surrounding wood.

-- Mark

View Danpaddles's profile


550 posts in 1734 days

#3 posted 03-18-2014 11:36 AM

Assuming you join clean, flat edges cut at a true 90 degrees- oh hell yes. Might be some downside on tool wear, especially if there are thick pockets of glue. Good yellow glue is hard, even harder with passing time.

Are you aware of the instability of the wood? It will change in width with changes in humidity. And it will not stay as flat as MDF. You need to alternate the growth rings on every other board.

Such panels can be purchased already glued up, I suspect they are of a fairly high quality. Check bLowes, or Home Despot.

-- Dan V. in Indy

View camps764's profile


867 posts in 1782 days

#4 posted 03-18-2014 11:40 AM

Dan’s got it. I wouldn’t be worried about strength, I’d be worried about it staying flat over time. You can’t really stop wood movement, from what I understand, all you can do is slow it down.

If flatness and stability is what I’m after I use MDF.

-- Steve

View Don Butler's profile

Don Butler

1081 posts in 2818 days

#5 posted 03-18-2014 11:52 AM

Despite my love of wood, I’d want a steel surface for such an application.
Maybe cast iron.
Or, Granite.

I know, I know.


-- No trees were damaged in posting this message, but thousands of electrons were seriously inconvenienced.

View hydro's profile


208 posts in 1174 days

#6 posted 03-18-2014 01:18 PM

As “panel stock” to cut on a CNC, I would say no. Reason being, as mentioned above, the 6” wood segments will move and warp to some extent almost immediately after glue up. To minimize this, I would use a series of narrower strips, like a “butcher block” construction. That array of grain directions will tend to average out the radial movement in the wood and will increase the likelihood that the panel will stay flat.

-- Minnesota Woodworkers Guild, Past President, Lifetime member.

View Mitchmor's profile


16 posts in 1014 days

#7 posted 03-19-2014 04:03 AM

Oh what a forum this is. Thank all of you for the instant insight folks.
You answered my Q and then some.

So joined boards in the butcher block fashion of narrower strips while reversing every other strip’s grain pattern it is!

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