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Make Super-Strong Through Mortises & Tenons

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Joint-sizing pointers

Joint-sizing pointers

Through-mortise-and-tenon joints typically go together one of the two ways shown at right. 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.

To join parts of equal thickness, cut both the mortises and tenons one-third the part thickness. On a joint using 3/4"-thick parts, for example, the mortise width and tenon thickness both measure 1/4".

Quick Tip! Allow some wiggle room. If your smallest chisel measures 1/4" wide, lay out mortises a hair wider than that to simplify chiseling out waste later.

For parts of unequal thickness, make the mortise and tenon up to a third the thickness of the larger part. To join a 3/4"-thick table apron a 1 1/2"-thick leg, for example, cut tenons 3/8"-1/2" thick on the apron ends.

Make the tenon 1/32" longer than the width of the mating part if you'll sand the tenon end flush with the mortised part after assembly. For beveled-end tenons, like the one shown above, make the tenons 1/4" longer than the mating part width.


Continued on page 2:  Begin with the mortises

 



Comments (2)
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bsaysideanhuy wrote:

Why subscribe, I purchase my copy from the news stand every month. Please stop sending me emails asking me to subscribe and by the way the publication is usually available there before my friend receives his via subscription. H.B. Smith baysideanh@yahoo.ca

6/25/2015 07:45:19 PM Report Abuse
bsaysideanhuy wrote:

Why subscribe, I purchase my copy from the news stand every month. Please stop sending me emails asking me to subscribe and by the way the publication is usually there before my friend receives his via subscription.. H.B. Smith baysideanh@yahoo.ca

6/25/2015 03:30:46 PM Report Abuse

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