RE: [CAD_CAM_EDM_DRO] Re: Optical mouse for DRO anyone?

> >So you're building a wire cutter. In your case, what Ron suggested
> >will work. Run the wire between 2 rollers, if you know the
> size of one
> >of the rollers you can count its revolutions, that gives you
> how much
> >wire has been played out.
>
> Better with a turn or two around a biggish roller and a
> spring loaded tensioner arm roller to maintain the friction.
> That's how a cable company I did some work for measured
> length of fibre optic, wires and Kevlar string going into the
> winding machines. The output after PVC coating and printing
> used a simple opto to count the 1 metre markers printed on
> the cable sheath.
>
> Steve Blackmore

That'll help with his next problem. If he's cutting 100 foot lengths, then
there's a nice big heavy roll of cable around somewhere...

I don't think I've seen cable marked with metre markers like that. I know
most cable has writing that repeats every foot (occasionally converted to
sort-of metric so you count 3 times to get a metre). Not really useful if
you're trying to automate something.

Tony