Re: hysterisis brakes

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Jon Elson <elson@...> wrote:

> >
> The simplest one would be some magnets salvaged out of a hard disk drive
> with an aluminum disk passing between them. You could adjust the

amount of

> the disk that is in the magnet's field to adjust the drag. I don't

know

> if this
> is the right range of drag for this application.
>
> Jon
>

I wondered about that, I just looked at commercial units, some of
those have magnets on both sides of the disk, each donut shaped has 4
poles and you can rotate one to change the braking force.

I'm trying to tension 0.05mm tungsten wire, it has a high breaking
strain and can handle high tensions but I'm not sure what to expect
from the hard disk magnets but I can try, I have about 20.

Graham