Cutting an 11-tooth gear

On my Grizzly G4003G the intermediate gear is a double with 86 and 91 teeth. They use that to convert to metric threading. Although my lathe will do all imperial threading from 4 to 112 tpi with the Norton gearbox, to cover all the metric threads requires three gear changes. These gear changes for metric combined with my laziness have made me a big fan of imperial threads.
 
While I have worked out a recipe for cutting an 11-tooth gear with a 12-tooth cutter (and a protocol for working out similar problems), I have now decided to stick with the 3D printed 11-tooth gear for now, because it damps out servo vibration, which allows me to configure my servo to be stiffer. I'm happy to re-print a new gear every once in a while and consider it a wear item. ☺
 
Just for information, the numbering of Metric cutters run the opposite direction to Imperial.
It isn't a manufacturer 'mistake' and very few people seem to know about it.
I only found out in the early 1990's although it is in Machinery Handbook as well (but I didn't have one way back when, I checked a few years ago)
 
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