Part 4210 (hose reel)

[N. W. Perry]

Something like this....   But with 5,5 teeth of course.
Keep the green cone. Make an adapter surface (light blue), and a 44-sided cone (light pink and yellow)
(Here I inlined 48-sided primitives, but you need to make it "44-sided", matching the 5,5 teeth.)

Make a 1/8 subfile that will attach to the pink 4-4ndis and three vertices in the green cone.

Brilliant, thanks for the guidance. I was just getting started with the cone as the adapter surface instead of the disc, but I see this way will probably look cleaner.

I'll use PrimGen2 to get the vertices for my 44-sided serrated polygon. :-)