Just got my new 3-1 lathe mostly set up. In the process of rebuilding I broke the smallest feed screw transmission gears. I bought a new gear knowing I needed to modify it. The modifications include boring it out, removing the hub and broaching a keyway.
I was able to hold it by the hub to bore out the ID but I'm not sure how to hold the teeth to cut off the hub. I have a three jaw and four jaw chuck. The only method I can think of is to machine a split bushing with the ID of the bushing close to the OD of the gear. I'm sure there has to be a better way. How have you guys done this?
The gear is a Mod 1.5 14 Tooth
Thanks
edit - added gear info
I was able to hold it by the hub to bore out the ID but I'm not sure how to hold the teeth to cut off the hub. I have a three jaw and four jaw chuck. The only method I can think of is to machine a split bushing with the ID of the bushing close to the OD of the gear. I'm sure there has to be a better way. How have you guys done this?
The gear is a Mod 1.5 14 Tooth
Thanks
edit - added gear info