Its a blind mortise and tenon joint where screws are driven through the edge of the stile and into the end grain of the tenon for increased strength. This will be for the base of a 300# work table/workbench.
I believe I read about it’s use in shutters and large doors but after many many searches I can’t seem to find the article online or in any of my books.
I can probably just wing it but I would love to find the article I read.
Thanks in advance.
Replies
I have no idea about the article or the name of the joint. I've seen bench bolts used for this purpose, assuming I understand your description correctly; it seems they would be stronger than screws, though it does involve drilling an extra hole in the piece with the tenon.
See http://www.leevalley.com/wood/page.aspx?c=2&p=31147&cat=1,41637 for a description of the type of thing I'm talking about. I've seen normal hex nuts used for this purpose too.
Mike
Could you be thinking about Breadboard Ends? This is a variation of the m&t that is often used to cover endgrain on a tabletop. It is used a lot in Arts & Crafts style furniture and often incorporates screws.
Matt Berger
Fine Woodworking
Thanks to both of you.
I have a feeling it came from a Sam Maloof video where he was unapologetic for using screws to strengthen a M&T joint. I will probably begin experimenting.
Thanks.
TWG,
Screws don't hold well in end grain so I suspect that joint you mention also has a dowel in it - set vertically through the rail such that the scew goes into the dowel's long grain when screwed through both stile and tenon-end. I just helped the "apprentice" make such a joint for his workbench, as he could not afford proper heavy-duty bed bolts.
In his case, the large (100mm) screw goes through the leg, into the rail stub tenon-end and finally into a 16mm dowel set vertically into the rail about 1 inch inboard from the stub tenon. The bench frame is rigid, using this arrangement. If there were no dowel, the screw would soon pull out of the rail's end grain and the bench frame would go sloppy - or so I believe.
Lataxe
Thanks Lataxe,
The dowel makes a lot of sense.
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