Machsupport Forum

G-Code, CAD, and CAM => G-Code, CAD, and CAM discussions => Topic started by: RadiganKS on November 02, 2020, 08:22:52 AM

Title: MasterCAM and Mach3
Post by: RadiganKS on November 02, 2020, 08:22:52 AM

I am new on the forum first of all.  I am a HS woodworking instructor who just received a brand new Industrial CNC router.  We are running MasterCAM 2019 and I am hoping someone on the forum would have a Machine definition file and post.  I tried one but I am getting crazy arcs on I and J arcs.  Any help would be much appreciated!

Title: Re: MasterCAM and Mach3
Post by: Tweakie.CNC on November 03, 2020, 02:22:08 AM

If your toolpath is displaying the 'crop circles' then change the IJ Mode (Config / General Config).

Ideally all Gcode files using arcs should contain the G90.1 /G91.1 as appropriate.

Tweakie.

Title: Re: MasterCAM and Mach3
Post by: RadiganKS on November 03, 2020, 02:36:12 PM

Thanks for the reply Tweakie.  I don't have an option in System Configuration to change the I and J.  I may be looking in the wrong location but as far as I know this is all.  Remember I am new to this!

Title: Re: MasterCAM and Mach3
Post by: ZASto on November 03, 2020, 06:18:41 PM

You should look in Mach3 General settings:

Title: Re: MasterCAM and Mach3
Post by: RadiganKS on November 04, 2020, 06:19:58 PM

Thank you ZASto and Tweakie!  That was the problem.  I had a chance to work on it after school today and all is good.  Cut an engraving toolpath with no problems.