I continually see 5/8" dowels used in commercial man doors, both interior and exterior. I just cut down an interior door that is about 90 years old and the joints were as good as new. I've been using 5/8" loose tenons and cut the mortises required for them with my slot mortiser. That works fine, but takes a lot longer than it would to drill a few dowel holes.
I can't find a dowel jig that uses anything larger than 1/2" dowels. That might actually be large enough but if I can find one with a 5/8" bushing that would be my preference. Also, I would like a jig that references off one face, not a self centering jig. This JessEm jig looks to be just what I'm looking for if it only had a 5/8" bushing option.
Does anyone know of a source of a 5/8" jig like I'm looking for? Any other options and/or comments relative to this task are appreciated as well.
John