Re: [CAD_CAM_EDM_DRO] Re: Stepper Wire ?

> Braid-shielded multistrand flexible cable is $$$, but Newark has some
> Belden unshielded "Infinity" 9-million-flex rated cable (74x38 strand)
> at $1.66/foot for 20-ga 4-conductor.
>
> Are you implying that because of the slowly varying current, that
> shielding is not necessary, or is that wishful thinking on my part?
> My drivers are 2A current limited, and I'm running <=4000 steps/sec

I usually go to Roger at Midwest Surplus Electronics in Fairborn Ohio for
wire.
He tolerates my crazy requests because I have spent so many thousands of
dollars
at his store that he has gotten used to it. I dunno if he has anything that
would work right
now, but if you ever are in Dayton, stop by Fairborn for some good stuff.
One time I was
in there and he had some monster steppers NOS for $15. If I realized how
much
those things go for on ebay, I'd be rich. Mendelsons is also a good store,
but unfortunately,
if you want it and there is no price on it, you can't afford it. Mendelsons
does have some
good looking motors, but usually they are priced a little too close to
retail.

That's a long-winded way of saying "check for electronics surplus stores in
your area"

Sometimes the multiple twisted pair stuff is cheaper than multi conductor.

> Braid-shielded multistrand flexible cable is $$$, but Newark has some
> Belden unshielded "Infinity" 9-million-flex rated cable (74x38 strand)
> at $1.66/foot for 20-ga 4-conductor.
>
> Are you implying that because of the slowly varying current, that
> shielding is not necessary, or is that wishful thinking on my part?
> My drivers are 2A current limited, and I'm running <=4000 steps/sec.