I’ve designed a small device to crease paper fan leaves (what else !), and I need to couple to shafts that are 8 degrees out of parallel. Imagine two cones laying in contact, and their shafts each have an identical gear at the larger end meshed, so that the cones are always in the same registration with each other.
I thought that they would be ‘bevel’ gears, but search as I might, they only seem to be for right angle drives.
Is there a special name for the gears that I am looking for ? 
MITA, John
(Or do I have to make my own !!!)
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A visual would help but it does sound like a bevel gear. Two bevel gears that make a 90 are often called a miter gear.
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You’ll probably need to use a bevel gear generator and 3d print them. I saw a couple that have customizable cone angles.
Shapeways etc can make really high quality prints if you don’t have a 3d printer. And no the Glowforge is not a 3d printer no matter what they say 
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“bevel gear in nonright angle” got me a lot of info, but yeah, pretty sure it’s gonna be homemade or ordered from a gear company.
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Well, much thought has led me to the idea that registration is the main objective, so not to get hung up on the particular gear, but look at alternatives.
Self-correcting for any slippage between the rollers is the way I’m thinking right now.
John
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