Machsupport Forum

Mach Discussion => General Mach Discussion => Topic started by: stirling on May 12, 2007, 03:55:11 AM

Title: arcs gone wild
Post by: stirling on May 12, 2007, 03:55:11 AM

Hi all

Has anyone come accross the problem of Mach3 getting the centre of G02 G03 arcs a country mile out? I have a simple toolpath to cut out a rectangular profile. Each corner (of the toolpath) is an arc which should have a radius of around 7mm according to the g-code. However Mach3 interprets the radius to be massive so I end up with a toolpath resembling a rectangle with huge "micky mouse" ears!!!

Sorry - can't seem to figure out how to attach images code etc...

Any comments, advice would be welcome.

Cheers

Title: Re: arcs gone wild
Post by: Graham Waterworth on May 12, 2007, 04:00:47 AM

Go into gen config and change the IJ mode, that should fix it.

Graham.

Title: Re: arcs gone wild
Post by: stirling on May 12, 2007, 04:43:08 AM

Many thanks Graham - problem solved - strange though, havn't had this happen before... Though I have just reloaded Mach3, but can't remember setting this before.

Anyway thanks again for your quick and spot-on reply

Title: Re: arcs gone wild
Post by: chad on May 14, 2007, 04:29:54 AM

And also don't forget your cam program can toggle this also.

Chad

Title: Re: arcs gone wild
Post by: stirling on May 14, 2007, 05:14:16 AM

thanks chad - right on the money.

I'd switched off "output arcs as linear segments" in my CAM (RhinoCAM) which meant this was the first time I'd actually posted a real arc (G02 and 3) so this was the first time Mach3 cared about this setting.

Thanks both for your help

Title: Re: arcs gone wild
Post by: Omega_Sam on January 21, 2008, 02:50:37 AM

Thanks for this thread, I was having the same problem posting from Gibbs.   Switching the IL buttons fixed that.

Omega_Sam