Phantom Image

Discussions around the CAM Add-On of QCAD.

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Dreamaker
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Phantom Image

Post by Dreamaker » Fri Jun 25, 2021 10:18 pm

In QCad/Cam I see the image I need, I can run a simulation and runs fine. I export to convert to G-Code and when I load it into Mac 3 it shows a Phantom ring and when the G-Code get to that line it starts cutting the circle. Image 1 is QCad and Image 2 is in Mach 3.
Attachments
PhantomObject2.jpg
PhantomObject2.jpg (274 KiB) Viewed 7227 times
PhantomObject.jpg
PhantomObject.jpg (236.01 KiB) Viewed 7227 times

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andrew
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Re: Phantom Image

Post by andrew » Sat Jun 26, 2021 10:03 am

Please attach your files (drawing file and G-Code), so we can help efficiently, thanks.

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Dreamaker
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Re: Phantom Image

Post by Dreamaker » Sat Jun 26, 2021 1:26 pm

It start OK, until line 2830.
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TriBracket1.nc
(20.7 KiB) Downloaded 349 times
TriBracket1.dxf
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Husky
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Re: Phantom Image

Post by Husky » Sat Jun 26, 2021 5:29 pm

Hi Dreamaker,

your dxf contains Z values (3D). Try to get rid of them with Menu / Misc / Modify / Flatten drawing to 2D. Save the drawing, create a new g-code and check in Mach3 the Phantom ring mystery ...
Work smart, not hard: QCad Pro
Win10/64, QcadPro, QcadCam version: Current.
If a thread is considered as "solved" please change the title of the first post to "[solved] Title..."

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andrew
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Re: Phantom Image

Post by andrew » Mon Jun 28, 2021 7:21 am

This looks like a tolerance / decimal digits issue to me. I've verified the G-Code in a 3rd party simulator (CAMotics) and the G-Code looks fine there too.

Can you change in your QCAD/CAM installation directory under postprocessors/Mach3MM.js line

Code: Select all

this.decimals = 4;
to:

Code: Select all

this.decimals = 3;
Or, alternatively, save the attached file to your postprocessors directory.

Then regenerate the G-Code.

This actually decreases the number of decimals. We've seen controllers which cannot handle higher precision.
Attachments
Mach3MM.js
(957 Bytes) Downloaded 347 times

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Dreamaker
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Re: Phantom Image

Post by Dreamaker » Mon Jun 28, 2021 7:44 pm

Sorry!! The computer I had the program on took a crap, the windows totally locked up and had no options to recover the hard drive. So I ended up totally rebuilding the computer. So I am slowly manually moving files. I replaced all the guts of the compute. So I have been busy updating. I am going to load the 64 bit QCad.Cam on the new drive and move the license file the the new drive.

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Dreamaker
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Re: Phantom Image

Post by Dreamaker » Mon Jun 28, 2021 7:48 pm

Husky! I drew the object in QCad, not anther CAD program, so it couldn't be 3D.

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