DIY & Home Improvement

X_Digger

(18,585 posts)

13. Yes, you can. Wood expands and contracts seasonally with humidity perpendicular to the grain.

Sat May 10, 2014, 07:24 PM

May 2014

That's why when you attach a table top to a base, you have to account for movement- either a slot allowing the screw to move, or specialized fasteners that can move.

When you do a breadboard edge like this-

You can't just glue the end piece of wood on- the field, the main part of the table, wants to get wider and shrink with humidity, at an angle different than the piece that's perpendicular on the end.

So only the center peg and groove is glued tight- the ones on the end are in an elongated slot to allow movement.

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Dovetail Jig Fixture [View all] X_Digger Apr 2014 OP

Very Cool...nt Jesus Malverde Apr 2014 #1

Dual purpose liberal N proud Apr 2014 #2

I like this. n/t lumberjack_jeff Apr 2014 #3

Speaking of jigs lumberjack_jeff Apr 2014 #4

Wow, really? I've seen his stuff, and find it fascinating, but.. X_Digger Apr 2014 #5

it takes some care to build it right, and cognizance of how wood changes due to weather. lumberjack_jeff Apr 2014 #6

*drool* no wonder. :) X_Digger Apr 2014 #7

Wood skews also? Seriously? I never knew this, it happens in some fabrics when they are framed bettyellen May 2014 #10

boards shrink a lot perpendicular to growth rings. lumberjack_jeff May 2014 #11

So, it baisically gets skinnier (if it were a tree still) as it dries? Interesting! bettyellen May 2014 #12

Yes, you can. Wood expands and contracts seasonally with humidity perpendicular to the grain. X_Digger May 2014 #13

Fascinating! Thanks for this. bettyellen May 2014 #14

nice. mopinko Apr 2014 #8

Thanks. Ergonomics was primary, storage was a close second. X_Digger Apr 2014 #9