Machsupport Forum

Mach Discussion => General Mach Discussion => Topic started by: LeeM on April 23, 2020, 12:18:36 PM

Title: Strange Arcs
Post by: LeeM on April 23, 2020, 12:18:36 PM

Hi,

Before I question DXFtoGCode's output and spend money on some other software, I want to first check that I don't have something set wrong in Mach3.
Attached are 2 files.
1. The DXF
2. The Code produced by DXFtoGCode.

Please could someone tell me if I've got the Mach3 settings wrong or if that DXF conversion software is faulty?

Additionally, if it is, please can someone recommend some good DXF/DWG to G-Code software that would have absolutely no trouble with the attached DXF.. If you have some to recommend, please could you convert it and post the resultant G-Code in a reply.
I'll then know it will work..
I've got about 70 names to laser out for my wedding next year  ::)

Thanks

Title: Re: Strange Arcs
Post by: Tweakie.CNC on April 24, 2020, 01:41:48 AM

Overall your DFX to Gcode is doing a very poor job and I suspect this may have been caused by gaps in your vectors.
Anyway, I ran your DFX through Vectric Aspire and have attached the Gcode file for you to test (you will need to edit the Gcode (use notepad) to set your offsets, etc.).

Tweakie.

Title: Re: Strange Arcs
Post by: LeeM on April 24, 2020, 02:09:18 AM

Thanks Tweakie,

I'll give it a whirl and check out the software.

Title: Re: Strange Arcs
Post by: Tweakie.CNC on April 24, 2020, 02:48:42 AM

Just one further point...

How are you turning your laser on/off ?.   If you are using the M3/M5 or M8/M9 commands then you need to check out the M11Px/M10Px commands as that will make a much better job.

Tweakie.

Title: Re: Strange Arcs
Post by: ZASto on April 24, 2020, 04:14:39 AM

When you import this dxf in Aspire it shows a lot of opened vectors.
First they should be Joined and afterwords you should Curve Fit vectors

You can view process here: https://youtu.be/MzTO9ikBuiA

As I do not use Aspire for laser work, no g-code generated :)

Title: Re: Strange Arcs
Post by: Tweakie.CNC on April 24, 2020, 04:31:49 AM

As ZASto has said, cleaning up your .DXF produces a much improved toolpath.

If it's any help I have attached my laser Gcode file for your cleaned-up .dxf.

Tweakie.