Comments on: The strength in a mortise and tenon https://www.rpwoodwork.com/blog/2015/02/21/the-strength-in-a-mortise-and-tenon/ inside the woodshop Sat, 21 Feb 2015 18:04:33 +0000 hourly 1 https://wordpress.org/?v=7.1.4 By: Rob https://www.rpwoodwork.com/blog/2015/02/21/the-strength-in-a-mortise-and-tenon/#comment-199353 Sat, 21 Feb 2015 18:03:57 +0000 http://www.rpwoodwork.com/blog/?p=3377#comment-199353 Thanks for the comments.

John,

Yes, but the comparison is made in the context of mechanical strength when placed under shear stress and they are both side grain-to-side grain glue joints.

Haha, weren’t those old guys once young?

Tico,

Yes, good point, agreed. I was trying to avoid the whole issue of registration of the tenon against the end of the mortise for the purpose of accurately locating a rail but I should have added “for the purpose of strength” and so I did add that now.

By the way, not by coincidence in the simple assembly above, the tenon in the photo is registered against one end of the mortise and there is a gap at the other end.

Rob

]]> By: Tico Vogt https://www.rpwoodwork.com/blog/2015/02/21/the-strength-in-a-mortise-and-tenon/#comment-199348 Sat, 21 Feb 2015 14:33:26 +0000 http://www.rpwoodwork.com/blog/?p=3377#comment-199348 I understand that “there is no point in fitting the tenon tight to both ends of the mortise” and generally I allow a bit of wiggle room in that dimension. However, in door building with intermediate stiles and rails with multiple panels it is necessary that the tenons locate exactly, in which case I use what might be called stepped tenons with shallow shoulders 1/4″ from the ends and 3/16″ deep to establish location. The full depth of the main part of the tenon can have some “slop.” Gluing up these more elaborate doors would be a nightmare otherwise.

]]> By: john https://www.rpwoodwork.com/blog/2015/02/21/the-strength-in-a-mortise-and-tenon/#comment-199346 Sat, 21 Feb 2015 13:44:49 +0000 http://www.rpwoodwork.com/blog/?p=3377#comment-199346 Yeah.

Although the mortice and tenon joint is cross-grain while the edge jointing is grain aligned.

Old guys knew a thing or two it seems.

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