Some months ago there was a discussion regarding above and a link to a video where the provider showed a very inefficient manner of doing so as well as being, in my opinion, much less safe than the alternate I suggested. The particular point in contention was the coping of the end for muntins and the order in which operations were done, the video treating every piece individually whereas I commented on cutting to length a block of material, coping, _then_ ripping to width and sticking...
At the time I mentioned that Delta/Rockwell in the ages of their heyday had published a very nice technical document on same but that unfortunately over the years my copy had gotten so worn it wasn't legible when copied. While looking for something else, I just happened to have stumbled over the tract at OWWM in its entirety in PDF form so thought I'd share the link. The particular operations are described therein as the following --
Hopefully somebody here or in the future will find this instructive.
With the demise of shop instruction of any depth in HS, finding these kinds of detailed "how-to's" for the practical operations is increasingly difficult and consequently most self-taught individuals either have to reinvent the wheel and stumble upon the proper sequence and specific operations or, like the poster of the video referred to, use far inferior techniques not knowing any better.