The project I'm working on requires a butt joint that will undergo a little
stress. I'm obviously going the glue the length of the joint, but I'd like
to reinforce it with a)screws, b)dowels, or c)biscuits. Anyone have an
opinion as to which of these 3 would add the most strength to the joint?
| The project I'm working on requires a butt joint that will undergo
| a little stress. I'm obviously going the glue the length of the
| joint, but I'd like to reinforce it with a)screws, b)dowels, or
| c)biscuits. Anyone have an opinion as to which of these 3 would add
| the most strength to the joint?
How many opinions can you stand? :-D
For me, the answer would depend on the stresses involved and what the
cosmetic requirements are. I'm prone to use pocket screw joinery when
I can - and M&T (sometimes pegged) when I can't.
Worse still, if I feel particularly AR about racking, I use a joint
like the one pictured at the link below.
DeSoto, Iowa USA
To answer your question where the butt joint is not subject to stress and
blended for cosmetic effect the screw and dowel construction are the most
effective. Where the joint is subjected to minimum to stronger stress, as
stated before, "Consider a scarf, finger or lap joint". If you are dealing
with oily wood like teak even two part epoxy will not adhere good you have
to add mechanical devices like screws or equivalent.
Thanks for the responses. I'm leaning towards dowels. To explain the project
further, it's a fold over leg for a Murphy bed. As such, the leg itself (and
the joint) is situated in the middle of the second piece which negates the
possibility of using a scarf or half-lap joint. A stopped dado is a
possibility, as long as I increase that dimension of the foot to compensate
for the depth of the dado.
I use dowels for virtually everything since I got a dowelmax jig. It
doesn't have the production speed of a domino, but it secures the joint in
all directions (not just two dimensions) and it doesn't require a $300
vacuum to use it. :-)
"A little stress" can be defined a number of ways..
Are we talking "shear stress" on a joint
or "sag stress" from a bookcase ?
There are big differences between a chair and a table.
Both get stress but you can guess which one receives the
What are you building will be required to give a real
We're talking shear stress, as the joint involves the foot underneath a
murphy bed. The foot folds out from the top of the bed on a pivoting board.
The joint in question is between the foot and the pivot board. The foot
meets in the middle of the board, which eliminates a scarf or half lap
joint. I'm leaning towards dowels as a strenghthener. I don't expect a whole
lot of stress on the board, but I'd rather be safe than sorry.
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