I daresay there are as many ideas as to how the design of a NBTV /cylinder machine might be as there are grooves in a wax cylinder!
(at the standard 160RPM for 2 mins that's 320 ideas! )
Some will favour a new machine with the Nipkow disc system and the new cylinder system all built into one cabinet. But unless one is certain about obtaining sync from the cylinder (which might well have been recorded from NBTV files from a PC or CD), then it would be a risky enterprise I reckon.
Others will favour a seperate cylinder system which can be attached to their existing NBTVs. Here the sync coupling has to be electrical, maybe along the lines I suggested re the rotating sync wheel.
So, if I could solve the cutter head problem the later is the way I would go, because a seperate machine allows for easier experimentation if things don't pan out successfully first time.....or 50th time!
I would also ensure that each NBTV frame occupies an exact number of grooves in the cylinder. (at the standard 160 RPM there are ~4.7 frames per cylinder groove)...hope my calc is right!
So I would ensure that it was a whole number, say 5, because that would enable a continual pattern to be seen along the whole cyl length and this might help in the sync problem eventually.
I say might! I do not know.
Anyway the repeated patterning along the cyl wall would look very pretty, don't you think!
Albert.