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is it structurally sound

1145 Views 10 Replies 8 Participants Last post by  RichT
Hey Folks,

I want to ask a question. I'm using solid maple (i believe specifically spelted - hardwood). What I wanted to know was, normally when you screw into wood, you want to screw into a side with grain on it, instead of the butt ends as its more structurally sound. Question is, What if you need to screw into the ends to suspend it. SO … take a piece of wood, lay it flat, so height 2", depth is 10" and length is 60". Now screw into the 2" portion on the ends, will you get enough bite into the wood that it won't work itself loose over time? Should a plate be added to increase weight tolerance? Were not talking a large amount of weight maybe 50lbs, and its for attach drawer slides directly to the edge of the wood. Can I screw the the slide directly to the wood edge without complications?

Thanks for info.
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Endgrain doesn't hold screws that well. One possible solution is to cross drill and install a dowel with the proper grain orientation to give the screw something solid to thread into.
Matthias Wandel used that technique to build a bed from construction lumber.
http://woodgears.ca/bed_frame/build.html
The biggest problem with screwing into end grain is that the screws can be easily pulled straight out. You would definitely not want to count on something holding if suspended from above (end grain pointed down). It will probably be okay with the end grain pointed sideways and the weight going down, especially if there is support on both sides of the board but it would definitely be better if you could attach the slides to side grain. If there is no support or you just want to be sure it never fails, one thing that would work is to cut a groove in the end grain and glue in a strip of wood to fill the groove that will give you some side grain to to drive the screw into. With a 2" wide board you could easily cut a 3/4" groove and put a 3/4 strip in there.
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I like that dowel idea. But if it's for something quick and dirty there's no reason this won't work- especially in dense maple. Just change the joinery slightly and it'll hold a ton. The screws are taking the weight in the first sketch, but they're just holding the board in place in the second and all the weight is transferred from board to board.

Handwriting Rectangle Font Post-it note Material property


If it's in the middle of a piece like a shelf half way up the side, make a dado. Nice and sturdy then.

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Not sure what your application is, but in similar instances I will use a corner cleat. Use a square piece, say 3/4" by 3/4" by however long you need, and glue and screw (or nail) it so the long grain touches each board you're trying to join.

For instance, in jamsoito's picture above, there would be a square piece of wood (the cleat) in the inside corners where the two pieces meet. In those pictures, you'd be looking at the cleat's end grain. Then you attach both pieces to the cleat rather than each other.

It's pretty much SOP for shelving in many bookcases and small closets.
Is it just going to hang stationary? You're probably OK with long screws, maybe 2 inches or more. Also, pre-drill and fill the hole with some good glue, like E6000.

If you want to get fancy, Nathan's wooden strip would do the trick, however I'd go deeper than 3/4".

Note that this is purely speculation and you will want to test it before you hang it.
Hey All, I may have solved it, but like your feedback on the idea.
My intentions are to use this drawer slide ( http://www.leevalley.com/en/hardware/Page.aspx?p=52492&cat=3,43597,43601 )

Here's a sketch, although it might be a touch confusing the the slab is 60"L x 12"W x 2" thick (rough → +/- 2.25-2.5" thick sanded 2.0 → 2.25" thick)

https://www.flickr.com/photos/[email protected]/shares/1a6tA8
Hey Fellas,

This maybe a stupid question, but how far in from the edges of a table can i put the legs underneath? I mean, if I have 72" length and 28 inches wide, can I go 4 - 6 inches from the edges (on the 72" length), and 2" in from the 28 inch wide? Given the top is a 2" thick solid slab, I'm thinking its ok?

Opinions?
Hey Fellas,

This maybe a stupid question, but how far in from the edges of a table can i put the legs underneath? I mean, if I have 72" length and 28 inches wide, can I go 4 - 6 inches from the edges (on the 72" length), and 2" in from the 28 inch wide? Given the top is a 2" thick solid slab, I m thinking its ok?

- M2D2
Yes.
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