Re: [atlas_craftsman] Re: skimming acme for fit
This has me thinking..
I have been known to use carbide indexable threading inserts with
their special toolholders for this purpose for creating the standard ACME
threads I've had to replicate.
And, I notice as I look through my insert assortment I have the
8tpi ACME type in Left Hand.
Though after I bought a new backplate and chuck my ACME threads
have been much cleaner than the 29 deg. Std. I do all the time.
My total runout since has been in the order of .0002 and maybe
.0003" on the occasion.
- But Compound screws are right hand, and also 1/2-10acme on the atlas :)
Jon Elson wrote:
> Damon wrote:
> >Ah I gotcha. Grind to a smaller tip, keep the angle. Cut to
> >depth. And now I've got the proper profile, but fat teeth
> >remaining. Swing componud around to dead on, pick up
> >the thread, and give it some real small shaves until the
> >leadscrew glides right in there.
> Yes, I made a crossfeed screw and thread this way, and it turned out
> great. (Of course, I cut it Right hand, and then discovered to my
> horror that the crossfeed screws are left hand!)
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