As I continue my first halting steps toward dovetailing, I've run into a question. What I suspect is the answer would mean a little more work, so I'll submit to the genius of the Creek Mind.
I've settled, for now, on using a Dozuki for ripping the tails (beginner, remember?). It leaves a 0.015" kerf. To cope out the gross waste before chiseling, I've selected a Lee Valley coping saw with a Pégas skip-tooth blade. The coping blade is 0.020" thick and leaves a 0.025" kerf. See photo. The coping kerf (C) is on the left and the Dozuki kerf (D) is on the right.
kerfs.jpg
So how do I cope down a Dozuki kerf with a fatter coping saw without scraping into the sides of the tails? It feels like I have two options. 1) cope inside the Dozuki kerf (say, on the left of the waste) and wind over to the other (right) side of the waste, and then come back to meet the left side? Or maybe I can 2) start to cope at the top of the Dozuki kerf, but cope immediately away from the the Dozuki kerf for the first waste cut. Those seem to be the only ways without gnawing on the tail side, but it's not what YouTubers like David Barron seem to do when they use a Dozuki.
Option 3: Use a Western style saw with a 0.026" kerf.
Wisdom, please?