[modeleng] Re: Another question

  • From: Allen Messer <al_messer@xxxxxxxxx>
  • To: modeleng@xxxxxxxxxxxxx
  • Date: Thu, 14 Oct 2004 07:04:54 -0700 (PDT)

Locate an old book on "Gunsmithing" or "Rifle making"
and check on the part about "Gain Twist" as this is
the method of doing it inside a rifle barrel and the
same method, I suppose, could be used to do it to the
exterior of a rod.

Al Messer
--- peter.chadwick@xxxxxxxxxxx wrote:

> Any ideas on how to cut a variable pitch spiral on a
> round rod?
> (Variable picth lead screw is NOT the answer I'm
> looking for!)
> 
> Peter Chadwick
> 
> MODEL ENGINEERING DISCUSSION LIST.
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