Re: endpoint radius errors with i,j commands

[Ray Henry <rehenry-at-up.net>]

Jon, Erie

I just heard of a company that converted all of their router production 
to the EMC.  They were having fits with arc end point errors because many 
of their old g-code files wouldn't run.  One of their staff wrote a small 
tickle program to check a whole file for arc end points and increase the 
accuracy if needed.  

I asked for a copy of the code and as soon as it's available will write 
it up as a script that can be run from the scripts menu in tkemc.

Ray


On Friday 08 November 2002 12:44 am, you wrote:
> Shelbyville Design & Signworks wrote:
> > Is there an easy way to eliminate this?
> >
> >  I've seen the article in the faq and haven't even attempted
> > a recompile yet, I've tried setting my s/w (signlab)  to 4 dec.
> > point precision (something you can't do with enroute) and
> > am still getting the errors. I suspect this would increase my
> > speed, as it presently cuts lots of short segments instead
> > of a nice steady curve.
>
> If you can make your CAD software generate radius instead of
> distance to center (in otherwords, you want the R word rather
> than I and J words) you completely eliminate this problem.
>
> If it is doing lost of short segments, then your CAD program may
> be sending G01 (linear interpolation) rather than G02 or G03
> (circular arc interpolation).
>
> Jon