On a related note, at the college I taught at we had a large CNC which students often used to cut out plywood parts. I came up with a CNC version of halving joints that would slide together easily but tighten up when finally closed. An example here: Tapered Halving Joint
. This eliminated any frustration students had putting their crisscrossing parts together.
That is a very interesting 'twist' on the slot joint. Thanks for that 4D , I find the whole thing very interesting.
I was getting a bit fatigued after the 20th cut on that shelving job , what with the clamping, squaring up, and adjusting the router bit length etc. I have been aware of CNC machines for a while, and my mind turned to how easy it would be if I had one, although I doubt I could be patient enough to do all the computer stuff to set it up. I gave up on SketchUp as it was too much for me. And that is before we get to the price and the space needed , of which I have neither in abundance.
Thanks for help everyone! It won't be the last plywood thing I make with this 'system' of jointing, as I am looking at everything now and wondering if I could make it better/lighter/cheaper/more bespoke/more practical.
Do you think there is any way, by hand, to mimic that method you explain on the CNC on your blog?
And you mention in the comments section on the CNC forum via your blog "Most classic woodworking joints are not intended/design to be knock-down. I've been using the tapering of tenons, embedded square nuts, tapered dovetail slots, etc"
Do you have a link or know of a book that outlines these methods, as they appeal to me in terms of moving these items about and being mobile with them