ACME (was Re: all-thread question

Hi all,


This is follow on to the ALL THREAD thread (pun intended)is a
question about ACME rod.

I read/heard some time ago (probably on this list)that there are more
than one grade of ACME rod.

and archetuchal grade and a ?mechanical? grade.

HF uses the cheap and ACME looking rod for it's vices and others use
it for the look and feel of thread.

The other grade or ACME is precision and very accuate. used for
machine tooling such as lead screws.


The question is:
Are there more than one grade of ACME rod ?

Dave

--- In CAD_CAM_EDM_DRO@y..., "n4onl" <umrk@b...> wrote:
> --- In CAD_CAM_EDM_DRO@y..., "starcast82" <rh@g...> wrote:
> > I'm going to start building my first cnc table and I'm trying to
do
> > it cheaply to start out. It is more a learning process at this
> point
> > and figuring out how to get it all to work and how hard it is to
go
> > from AutoCad to the CNC. After I get to that point I figure I can
> > upgrade to better parts. After looking up the prices on Ball
screws
> I
> > am planning on using all-thread attached to a stepper motor for
the
> > motion control. Will this be an acceptable and usable alternative
> or
> > am I wasting my time ? Thanks for the help.
>
> Acme threaded rod is currently on sale at Enco for...
> 1/2x10 $3.49 3' $6.99 6'
> through
> 1 1/2x4 $23.99 3' $36.79 6'
>
> Search for " Acme Rod " to see the sales prices.
> http://www.useenco.com
>
> I purchased some for my CNC router project and it should be more
than
> good enough for your prototype CNC Table.
>
> mike