View Single Post
  #16   Report Post  
Posted to rec.crafts.metalworking
Gunner Asch[_6_] Gunner Asch[_6_] is offline
external usenet poster
 
Posts: 10,399
Default Turning an O-ring groove in piston

On Fri, 7 May 2010 07:29:29 -0700, "Bob La Londe"
wrote:

So what's the proscribed method? I expect I need a pretty consistent radius
bottom. What's the best way. Make a rough semi V lathe bit, and then make
a decent round one to finish?


No..use the round one to start and finish with.

If you have a tool and cutter grinder and can make some fixtures..you
can turn out a decent half round tool

On the other hand...unless you are handling really high pressures...you
CAN often times get away with a simple V groove.

Gunner

--


"First Law of Leftist Debate
The more you present a leftist with factual evidence
that is counter to his preconceived world view and the
more difficult it becomes for him to refute it without
losing face the chance of him calling you a racist, bigot,
homophobe approaches infinity.

This is despite the thread you are in having not mentioned
race or sexual preference in any way that is relevant to
the subject." Grey Ghost