Re: [CAD_CAM_EDM_DRO] SPINDLE

> No, this won't work. it will reduce the idling speed of the router, but

it

> will
> also cut the torque to nil. A Variac will work fairly well, as it keeps
> constant
> voltage under load. I think some of the router companies sell speed

regulators

> that the router plugs into.

Ahhhh, I actually put variac in my reply and then deleted thinking something
was wrong with it. Now I see why. I need to think a bit more. :)

> Optical tachs won't work too well, either, as the dust will blind the

photocell

> in a minute or two.

I know car garages sell contact rpm meters, I don't think they would go to
30,000 rpm, you'd have to make a little gear for it to (I think the one I
saw was 15k rpm, 2:1). Besides, you should have a dust extractor hooked up
to that router, you don't want MDF dust everywhere with all the worries
about it being carcinogenic.

Thanks,
John Heritage