Welcome back to those readers who have been following along this build of an all-joined, glue- and metal-free frame-and-panel dining table. The influence is 16th century Chinese, and the wood African bubinga.
Continuing on then with the work on the Giant’s Arm Braces, or banwancheng. The next maneuver was to cut a blind mortise on the lower ‘tenon’ end:
On the lower surface of these brace ‘tenons’, I cut a rebate, which will be part of the means by which the brace locks to the table leg:
All four braces now are complete at their lower joins:
It was fitting time for a fitting session, if you follow. These joints, due to their beaked profile and central locating ‘tenon’ are exactly the same sort of kettle of fish as the sword tip miter fittings described recently – kinda nightmarish. I need to be cautious fitting these given their critical dimensions for assembly and direct relation to the leg perpendicularity – and with the braces being curved and inclined, and on a 45˚ plan axis, there’s certainly not a lot of room for any miss-cutting. No, no mistakes allowed!!
Here’s the initial presentation of one brace to one leg:
As you can see on the top face, there is a bit of a gap between one of the 45˚ cheeks of the brace. So, some work is needed. I left them a little fat, so there is room to play. The amount of play room is seen in the space between the end of the brace ‘tenon’ and the back wall of the slot, @1/32″ or so at most.
My tools of choice here are a Japanese saw file;
While re-shaving the inside cheeks of the beak, I also take the opportunity to check the inside of the mitered ‘beak for squareness. I used my gauge block, which is a perfect 90˚ at it’s corners, pressed flat against the ‘tenon’:
Once the stepped seat was done, I tried the fit, and was pleased to see the brace snug down there nicely:
As you can see, this mechanism is a little involved, but I think it will make for a much stronger connection between the banwancheng and the leg, as compared to the usual classic Chinese furniture technique of a half dovetail and glued infill plug (which is nothing to sneeze at, BTW).
All for today- thanks as always for taking the time to explore the Carpentry Way. –> on to post 33