How to cut double threads?

terry76November 12, 2006

I was needeing to know how to cut double threads on a engine lathe. If anyone can help I would greatly apprecate it.

Thank You,

Terry76

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Konrad___far_north

Double Start Thread
Not sure when done last but hope I get it right?
On some machines there is a easy way to turn a gear, especially good for more starts like 3 or 4 but moving the tool with compound works too.
Lets assume.... when looking at the bolt [thread] and checking with the thread gauge for pitch and it will show
"8"...8 threads per inch, .125 pitch, this is half, so you are actually cutting 4 threads per inch, when done, move the tool over on your compound by .125" to be between the thread you have cut and start cutting second thread.
Konrad

    Bookmark   November 15, 2006 at 9:57PM
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