Hello,
I have been reading the forum for the last couple weeks. I have since joined so I can access all the info. here.
I have a South Bend Heavy 10 Collet lathe.
I have a simple question regarding the gear train from the spindle to the stud, to the idler, to the screw. Doesn't the actually number of teeth matter on each of these gears? For example, I know the stud gear is 20 for the majority of threads. But what about the idler. I have an 80 on it. I also have an 86. The book just states a "large gear in the idler" and a "small gear on the screw" (paraphrasing).
I am actually more interested in a super slow feed rate for a fine finish than cutting threads. It just seems one tooth more or less would affect the tpi and/or the feed rate.
Thanks, B-Fifty2
I have been reading the forum for the last couple weeks. I have since joined so I can access all the info. here.
I have a South Bend Heavy 10 Collet lathe.
I have a simple question regarding the gear train from the spindle to the stud, to the idler, to the screw. Doesn't the actually number of teeth matter on each of these gears? For example, I know the stud gear is 20 for the majority of threads. But what about the idler. I have an 80 on it. I also have an 86. The book just states a "large gear in the idler" and a "small gear on the screw" (paraphrasing).
I am actually more interested in a super slow feed rate for a fine finish than cutting threads. It just seems one tooth more or less would affect the tpi and/or the feed rate.
Thanks, B-Fifty2
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