Regardless of which one you choose to use start by drilling the couterbore and clearance hole in the leg both at the drill press then put the leg on the bed rail tenon and use a handheld drill to make the bed bolt hole in the bed rail.
Mortise and tenon bed rails.
You want to cut a 1 4 thick tenon on a 6 wide rail.
Rails and posts jr s bed part 4.
Table leg to rail joint mortise tenon the most common way to join table legs to rails is the mortise and tenon joint specifically the stub haunched mo.
Through mortise and tenon joints typically go together one of the two ways shown above either both parts are the same thickness a 3 4 rail mating a 3 4 stile for example or the tenon fits into a mortised part of greater thickness such as a 3 4 thick table apron against a 1 1 2 square leg.
The top and bottom tabs provide lateral rigidity and prevent rotation while the heavy corner gussets maintain a perfect 90 angle the m8 5 16 connecting bolt is held captive in the bed rail bracket so you never have to worry about losing it.
Made from 0 072 gauge zinc plated cold rolled steel.
The haunch the cut away part of a sash corner joint that prevents the tenon coming loose is one third the length of the tenon and one sixth of the width of the tenon in its depth.
This joint will consist of a stub mortise and tenon which will be held in by a bolt which i will add later.
Right now most joints will be mortise and tenon.
Includes enough brackets for one bed.
Connecting the rails to the posts.
Now we re onto the last bit of joinery in the project.
But a 3 wide tenon is greater than 1 1 2 which is six times the tenon thickness.
To join parts of equal thickness cut both the mortises.
Ellis s rule says that your tenon should be 3 wide.
I m designing a loft bed here s a rough picture without the cross supports and other details.
Complete the tenon by standing the rail on edge and cutting the top and bottom shoulders.
A 4x4 makes a great backer block for this cut.
With the tenon partially seated in the mortise there should be enough friction that if you lift the tenoned workpiece the mating piece comes with it.
These handy implements work to trim the end of your log rails allowing them to be inserted into other logs to create the base structure of your furniture project.
If that tenon s width would be greater than six times its thickness then you should split it into two or more tenons.
April 12 2017.
The remaining two thirds of the rail the tenon shoulders help to counteract lateral forces that might tweak the tenon from the mortise contributing to its strength.
The leg acts as a guide to keep the hole as perpendicular to the rail s end as possible.
The posts can also be cut to size and shaped and the live edges treated.