Re: [CAD_CAM_EDM_DRO] Calcomp Plotter suitibility for XY CNC control ?

Alan Marconett KM6VV wrote:

> Brad,
>
>
> The Calcomp plotter must have some fair sized steppers. I suppose one
>
> could compute the x & y scales, and drive it like an HPGL plotter!
> Pen
> UP/DN could run a stepper between two preset limits for Z. 15:1 might
> be
> s.l.o.w., but OK for starters. Are you intending to drive a Sherline
> mill, or your own xy table?

No, he clearly said SERVO, and he means it! All the higher end Calcomp
plotters
had BIG servos with shaft encoders, and they whip the pens and paper
around at
50+ IPS with up to 4G acceleration (with the pen down) I think it has to
be over
10G with the pens up.

Jon