I received an email a couple days ago from a student at the University of Michigan that goes like this:
The short answer was no.
Generally mortise and tenon joints are sized to the available tooling, and are based on the particulars of the design at hand. In my case, I use a Powermatic 719A Mortiser (shown to the right) and have ¼”, ⅜”, ½”, ⅝” and ¾” hollow chisels. While designing a piece, I pick one of the chisel sizes based on the strength (or other factors) needed for the furniture item in question. A ¾” thick stretcher on an end table usually gets a ¼” tenon, and the leg gets a ¼” mortise to match.
But in the case of work being sent to a CNC router (or template routing by hand), there is a bit more flexibility as to joint size. You may want to tweak a tenon size up a bit when switching from white oak to pine for instance.
I really need to add an iLogic tutorial or four, so I decided to create one for this scenario. I think I’ll use a leg and apron section, and possibly add an adjustable Shaker style taper to the leg.
An iLogic Tutorial generally runs about 20 pages or-so, so this may take a while to fully post. I may post some ERP related posts in-between, but then again, maybe not
There are links to the entire series in the right hand column. Enjoy!
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