Re: Polar Coordinates CNC?

Ken,
Here is one reason; it's called necessity :-) I wanted to make some
decorative wooden gears that appeared to be too big to do on the
Sherline. But, by mounting the blank on the rotary, I only had to
access from the center of the rotary to the outermost point on the
circumference yet could still cut anywhere on the full disk. There
may be better ways, but I just drew it up in the normal X-Y fashion
and wrote up a small VB app to convert the Y's to C's. The only
tricky part was that a new feed rate has to be entered for each
block, due to the way that my controller (CNCPro) handles rotary
feeds.
So, to answer your question, it basically doubled my capacity for
this rather unique job.
Hope this helps,
Al Lenz

--- In CAD_CAM_EDM_DRO@y..., Ken Jenkins <kjenkins@b...> wrote:
> Interesting idea ... but why? It seems to me the particulars
> of the math involved would not make arriving at the end use
> coordinates any easier. Do you have a particular application
> in mind? I'm just curious why Polar over Cartesian would
> be any better and if so why it hasn't been done?
>
> Ken
>