I processed some more Mahogany stock to make the wall brackets for the pair of Greene & Greene sconces I’m working on. I have no idea how the originals were constructed, but this is what I came up with — twin tenons. The hole in between is for the wiring.
I chopped the mortises first, so I’d have something to gauge the tenon size from. I was really pleased with how well this process went, I chopped the mortises using a regular bevel edge chisel the way I’ve seen Paul Sellers do it in his videos. I laid out the location in pencil then scribed the exact location with a mortise gauge and knifed in the top and bottoms. Then I transferred the location to the backside using knife nicks at the corners and did the same layout on the back.
I chopped half way through from each side and ended up with nice, true mortises. I;m really enjoying using my Lie-Nielsen chisels, they hold an edge much better than my old chisels. And this Mahogany chisels nicely.
Once I had the mortises chopped I cut the shoulders for the tenons with a dado blade, then transferred the width of the tenons directly from the mortises to the tenon piece, and sawed them with a back saw. I stayed off of the line and pared to the line, checked the fit, pared a little more and viola!
Lather, rinse, repeat and I have the second part fit up. When I glue these up I’m going to wedge the tenons to make sure they won’t some loose or sag. The lantern and wiring won’n weigh much even with the glass installed, but I want to make sure it’s nice and sturdy.
There are a lot of little details to take care of still. I have to shape the back pieces, inset the Ebony accents, drill for wiring and figure out how to mount these on the wall. That last one I’m still not 100% clear on as I haven’t found the hardware I want to use. I want to inset some brackets in the back to be able to hook these over some protruding screws, and I’m thinking that mounting the hardware should probably be one of the very next steps. Rats!
I just did some quick research, apparently these are called “keyhole hangers”, and Woodcraft carries a size that will probably work. Maybe the local hardware store has something similar. I like the ramped slot in this which will tend to draw the lamp tighter to the wall as it slides on. Time to go shopping!