07-08-2012, 09:19 AM
(This post was last modified: 07-08-2012, 09:24 AM by Sunset Machine.)
That is a bit much, but I don't know if it's that critical. Eyeballing the cutter to a center is close enough, although you're a bit out in the field at .080...
I've had bad luck with tapered arbors, the gear blanks are too narrow and tend to cock off to one side. The pressure/hammering of the cutter on the workpiece doesn't help. Better, I think, is to make a stepped arbor, and even your beat up lathe can make them. They force the blank to be square, up against a shoulder like that.
Threads are optional, a press fit if you want. I prefer using a nut though.
I've had bad luck with tapered arbors, the gear blanks are too narrow and tend to cock off to one side. The pressure/hammering of the cutter on the workpiece doesn't help. Better, I think, is to make a stepped arbor, and even your beat up lathe can make them. They force the blank to be square, up against a shoulder like that.
Threads are optional, a press fit if you want. I prefer using a nut though.