Re: Accuracy of i and j for arc centre

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

>
>
> sid8ball wrote:
>
> >Can anybody tell me how accurate i and j have to be.
> >In metric i am rounding down to 3 decimal places and in imperial

im

> >rounding down to 4 decimal places.This could lead to a 0.001

error

> >in metric and a 0.0001 error in imerial. would this be a problem?
> >
> >I dont want to use r instead of i and j
> >
> >
> Why are you asking? To get enough precision to allow a specific

CNC

> control to not choke on the G02 or G03 command? Or to get a

desired

> precision on the finished part?
>
> Jon

Thanks for the reply jon

So the cnc control wont stop on the G02 or G03. I think it is a
combination of the start and end point as well as I and J. I know if
you use R the cnc control will make the best rad from the points it
has.

Sid