Wood Joinery Question

Not there. It's most similar to a lap joint.But that intersecting piece would carry on thru to form a T. But imagine those pieces being 4" wide strips of plywood. I've seen it on cheap particle board tables that are "knock down" It was 3/4 thick 12" wide x maybe 30" tall. With a 3/4" wide slot cut in the middle of the 12" dim & it went down 15". And the other piece was identical.Only you flip one of them over & slide them together to form a 12" x 12" x 30" tall T.

It is called a dado joint.

Gotta love that Mortise and TENDON splice! Makes for good soup... or tennis elbow...

THANK YOU! That's exactly it. There was an arguement that half-lap was only when it was done "horizontally" or thickness wise. Not edgewise. Thanks so much.You guys are HANDY to have around! lol

Or even a housing joint?

Hey there, PWSlack.

I find this definition of 'housing joint' here: http://www.diydata.com/techniques/timber_joints/box_joints/box_joints.php

"A channel is cut into one piece of wood so that a second piece of wood fits into it. The channel should be no deeper than one-third of the thickness of the piece of wood. The amount of timber to be left between the channel and the end, should be at least the width of the channel.

Many drawers are constructed with housing joints as they withstand stress from several directions.

The sides of the housing channel are marked on the appropriate piece of timber and the depth is also marked on both edges of the timber. The sides should be cut with a tenon saw and the surplus material removed using a chisel or a router set to the appropriate depth. The depth should be cut twice, the first time to remove the bulk of the material, the second time to carefully take it down to the correct level."

More like a dado, except for floor joists or drawer boxes.

I may have opened my yapper too soon... PWSlack, did you mean 'Housing' the joint?

Your phrase was rumbling around in my head (lots of room to rumble up there), I looked in my old Radford's Details, and found a detail (Plate 48, Fig 50) that my grandfather referred to as a 'housed' joist end. Subsequent internet search finds this detail, noted as a "Cross Halved Joint with Housed Corners'

Good call!

The joint is called a "cross halving joint" if done in the middle of the run ie to make a cross but to make a "T" it is just called a "halving joint.

Hey guys,

I think what you are actually describing is a "bridle joint".

Don