I've got to join some 1x8 mahogany to "make them longer" for converting a full size bed into a queen size. (That's a different issue.)
I know how to make a scarf joint but am not sure on the angle other than the more surface the better. From a realistic point it must be some where between 45 degrees and 10 degrees or so. There must be a point ofdiminishing returns where little strength is gained for a shallower angle.
There are lots of sites from Google, but I have not foune one that gives an idea of the angle strength relationship.
Thanks