Machsupport Forum

G-Code, CAD, and CAM => G-Code, CAD, and CAM discussions => Topic started by: prime on August 05, 2010, 11:53:44 AM

Title: Imsi Design Cad Arc Problem
Post by: prime on August 05, 2010, 11:53:44 AM

Hello,

I have an issue that I cannot figure out.  When I create an Arc in CAD then import it into Mach 3 it works fine.  The layers are correct and the Entities show the correct Min and Max size.  However, if I try in CAD to adjust the Arc size in the Y region so it is more of a Cone type Arc it fails to import into Mach 3 correctly.  What it does is looses the layers (red x in layers) and the Entities show -9999 and 9999 on X and Y. ???

If anybody has any information on this please help.

Thanks,

Tony

Title: Re: Imsi Design Cad Arc Problem
Post by: Graham Waterworth on August 05, 2010, 12:43:29 PM

Hi

I have not used that software but in a lot of cases if the arc becomes an oval or ellipse the dxf outputs is a spline and mach3 can not handle splines, if you look in the tools of the cad program you may find an option to convert splines to line segments or a convert to lines option on the dxf output.

Graham

Title: Re: Imsi Design Cad Arc Problem
Post by: ger21 on August 05, 2010, 03:53:54 PM

Try to export as v12 .dxf, or the oldest possible. V12 and older will usually convert ellipses to polylines.

Title: Re: Imsi Design Cad Arc Problem
Post by: prime on August 09, 2010, 11:02:48 AM

Thanks guys.  I will try your recommendations.  Really like to get this to work.

Tony

Title: Re: Imsi Design Cad Arc Problem
Post by: prime on August 11, 2010, 11:59:14 AM

Awesome...I got it to work ;D

I used my AutoCad Lt to save as Version 12 and it converted the Arc to a 3d Polyline.  It goes into Mach 3 perfectly now.

Thanks guys for the help.

Tony