3 way lap joint! 1


A little stool with a 3 way lap joint!


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Choose you material

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for my stool I choose walnut but you could use what ever you want, even a couple different species. It needs to be at least 1 1/2″ thick, 6″ wide and about 4 and a half feet long. then you can lay out and cut three sections. one for the legs(14″), one for the stretchers that make up the lap joint (10″) and the top. (14″)

 

Rip stretcher and legs

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Once you have gotten your material chosen you can rip 3 legs and 3 stretchers to 1 1/2″ widths. The stretchers and legs your going to want to leave long so you can trim them to length later. Before you cut the lap joint it would be a go idea to clean up all sides with either a hand plane and a sander.

 

 




 

Cut the lap joint

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take the first piece and using a table saw sled and a 30 degree/60degree fence, cut the first dado 1/2″ deep. All I did is took a piece of scrap mdf cut to two side to 60 degree angle and screwed it right to the sled. I decided to leave about a 1″ reveal after the joint so I made a mark 1″ from the end and then using the other peice of the lap joint, marked its width. Now that I have my material marked out it was just a matter of hogging out all the material on the table saw and just inching up on the Mark so that I had a perfect fit

 

Screen Shot 2015-06-29 at 10.59.13 AM Place the dado onto the the second piece and mark for the second dado. This one will be 1″ deep.

 

Screen Shot 2015-06-29 at 11.01.34 AM  remove the angle fence from the sled and cut a dado through the first two stretchers together at 1/2″ deep (see video). finally place the third piece in the dado and trace it out. cut out what you can with the table saw and finish with a chesil.

 

Cut the stretcher to length

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Use a compase to make your desired circle, then cut the stretchers on the line at the desired stretcher sprawl. I think I got mine at 15° make sure that you cut the angle with the right orientation

 

Cut the top into a circle

Screen Shot 2015-06-29 at 11.03.55 AMYou can then cut out the top using a band saw. I used a round over bit in the router to ease the top edge.

 

Fasten and glue up

 

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I then glued the lap joint together, cut the sprawl angle on the top and bottom of the legs,screwed the legs to the stretchers (covers with plugs) and screw the top to the legs (covered with plugs).

 

Screen Shot 2015-06-29 at 11.03.40 AMHere you can I see I have glued the stretcher to the legs and clamped it together until the glue dries.

 

Spray on your choice of finish


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I used spay liqueur but you can use what ever you want.


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