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Mach3 and G-Rex / Re: Mach3 Circles - weird behavior
« Last post by damien.walker on April 18, 2024, 06:02:12 PM »
Hi Tweakie, thanks for your thoughts..

The Z axis is actually the least of my problems at the moment but as I am just starting, any advice is very welcome.

Why do you say my Z axis never reaches zero? It does on my table...it bobs up and down between 0 and 10mm, aided or hindered by the torch height controller. Is your advice based on my use of G0 as opposed to G1 commands? If so, that's a trivial mod.

I discovered my problem cutting a 'real' object, not a circle and my interest in the circle stems simply from a desire to get to the bottom of my current problem....ie I haven't even considered the z axis behaviour with the circle.

I imagine that once I clear the hurdle of why my X,Y axis are apparently doing weird things, I'll stub my toe on other problems....what's the betting that your concern about my z axis will be the next!

Appreciated.
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Building or Buying a Wood routing table.. Beginnners guide.. / Limit Switch Light
« Last post by GerryW on April 18, 2024, 09:47:17 AM »
I'm a real newbie and am building a CNC router. I just completed the build process and am running my first job.  It did not go well.  But that's another story.  Right now I'm trying to figure why my M2++ limit light won't go out? I used 'Manual OverRide Limit' in Settings to move all the axis incase they were touching limit switches. Light stays on.  I finally unwired the limit switches from controller card and hooked up a temp limit switch that's attached to no axis. The temp limit switch works but still the light won't go out.  Any thoughts in what I did wrong?
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Mach3 and G-Rex / Re: Mach3 Circles - weird behavior
« Last post by Tweakie.CNC on April 18, 2024, 08:15:37 AM »
Just my opinion, for what it is worth…

I think you need to rethink the way in which you are creating your GCode within your CAD/CAM software because what you currently have is not correct.
As an example, you have an excellent GCode circle created in X-Y Incremental mode but your Z axis GCode moves are expecting an Absolute mode movement. Look what happens to your Z axis position when you run the ‘Circle – Copy.txt’ file you have posted – it never gets to Z0.00.

Tweakie.
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Mach3 and G-Rex / Re: Mach3 Circles - weird behavior
« Last post by damien.walker on April 18, 2024, 05:51:40 AM »
Drawing of  what the machine actually cuts
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Mach3 and G-Rex / Re: Mach3 Circles - weird behavior
« Last post by damien.walker on April 18, 2024, 05:50:48 AM »
Screenshot
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Mach3 and G-Rex / Re: Mach3 Circles - weird behavior
« Last post by damien.walker on April 18, 2024, 05:49:25 AM »
Hmm, no attachments...

I attached three files, but  I don't see any of them in my response.....

If I try to re-attach, it says they already exist....

Hope you can see them!
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Mach3 and G-Rex / Re: Mach3 Circles - weird behavior
« Last post by damien.walker on April 18, 2024, 05:45:52 AM »
Hi Graham,

I am now fairly confident that this is not caused by the Absolute/Incremental setting as it makes no difference to the machine movements....I do still have an issue with it occasionally resetting to absolute despite setting incremental in the config and saving my settings...anyway, I have attached my code...it's just a circle! More complex designs show the same problem multiple times with the 'drift' appearing to be cumulative.

When I import this, MACH3 interprets it and shows a perfect circle on the display - see photo MACH3Display

Finally, as the  green 'cutting dots' don't remain on the screen, I can't photograph what the machine does when I start it running, but I have drawn what it does....see Bomb.jpg ('Bomb' because of the fuse on top!). The circle should be centred on the CAD cross hairs, ie where the 'fuse' tail is centred....it reaches the 3 o'clock position correctly and then veers off, drawing the displaced circle in the position shown. I don't have any means to plot my gcode other than a piece of graph paper (which I haven't resorted to yet) but I don't think this 'feature' is in the gcode, mainly because MACH3 doesn't show it in the display window. It looks a bit like a lead-in (though I haven't programmed one as far as I am aware).

I really appreciate your help!

Many thanks.

Best regards,

Damien



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*****VIDEOS***** / Greetings from Japan
« Last post by myoshii on April 17, 2024, 07:41:26 PM »
My first work, upped on Feb 11, 2012😊

https://youtu.be/PijzkFwsIM8


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Mach3 and G-Rex / Re: Mach3 Circles - weird behavior
« Last post by Graham Waterworth on April 17, 2024, 07:38:23 PM »
Post your code and a drawing of what you are trying to cut.
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Works in progress / Re: New Router Screen
« Last post by timcki on April 17, 2024, 06:30:39 PM »
I like the offset buttons on the run page!!
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