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Post by srosti on Sept 14, 2017 1:45:32 GMT
I am trying to print the example millright CNC file and the router doesn't cut into the wood, it just does all it's movements right above where I set the zero point. Any pointers, I'm sure I missed something obvious, but I couldn't find anything online.
- I set the drill bit to just at the top of the board using Unversal Gcode Sender - Then I send the command G92 X0 Y0 Z0 - then I submit the file and it goes through the commands, just not actually cutting into the wood.
Thanks for any suggestions! Shawn
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Post by aforww on Sept 14, 2017 1:47:17 GMT
Check your can settings
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Post by srosti on Sept 14, 2017 2:05:09 GMT
What are can settings? thanks!
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Post by aforww on Sept 14, 2017 4:44:05 GMT
Oops. I meant CAM lol. I don't know what program you are using to make your Gcode so can't tell you exactly where to look. For example, in Fusion I'd check your "heights" tab or the "feed height" block.
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Post by Derek the Admin on Sept 14, 2017 12:42:20 GMT
I think he's using the example file in the quick start guide, Aforww.
Are your Z movements normal when you just jog it up and down? Meaning, if you jog it 10mm up does it actually go 10mm up and 10mm down when you jog it 10mm down?
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Post by aforww on Sept 14, 2017 13:48:49 GMT
I think he's using the example file in the quick start guide, Aforww. Are your Z movements normal when you just jog it up and down? Meaning, if you jog it 10mm up does it actually go 10mm up and 10mm down when you jog it 10mm down? Ah. I never used it. Had forgotten all about it lol. Is it a ready run Gcode file or just a .dxf they model and cam?
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Post by Derek the Admin on Sept 15, 2017 0:16:20 GMT
It's a ready to run file.
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Post by srosti on Sept 15, 2017 14:12:20 GMT
Here's some videos to help explain. As far as I can tell I can jog the router manually in the X, Y and Z coordinates just fine. I am not sure if I got exactly 10mm, but it looks like it's in the ballpark. Here's what I notice: 1) The homing sequence runs fine. 2) There is a loud grinding noise when I run the ready to run millright cnc example file. 3) The 'Y' homing switch doesn't seem to stop the motors when I run the file, even though the homing switches work just fine during the homing sequence. Homing Sequence: www.youtube.com/watch?v=QGwNvNTrd7QMillright sample file www.youtube.com/watch?v=KkGkib-5g8cThanks!
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Post by jreimers on Sept 15, 2017 14:30:33 GMT
This one is easy. You have not set your Project Home Setting. This is the location of the point you have told GCode is your starting position. For instance if your tell GCode that you want to start in the lower left corner of your work piece, you have to your CNC machine where that lower left corner is. The Grinding noise is the router carriage either hitting the X right edge or the Z top edge in your video. I didnt watch closely enough to let you know which. Solution: Jog your machine to the lower left corner of your work piece then Send the command G92 X0 Y0 Z0. This will tell your CNC machine where to start. It is offsetting your Work Position from your Home Position. Derek has a video in the Tutorial Sticky on this. www.youtube.com/watch?v=61FNml8M3i0&feature=youtu.beI am using UGS Platform now and set a Macro to send this command for me now to help me remember to do it. I have heard that grinding noise WAY too many times myself.
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Post by srosti on Sept 15, 2017 15:02:35 GMT
I can check again when I get home tonight, but I have set the home location (G92) numerous times (ie: my first post). Maybe the command isn't actually being run... hopefully it's as simple as that.
It's also interesting that the 'Y' homing switch doesn't stop the router from going beyond the limit when running the file.
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Post by jreimers on Sept 15, 2017 15:17:05 GMT
It's also interesting that the 'Y' homing switch doesn't stop the router from going beyond the limit when running the file. I have noticed this myself. The Homing switches don't seem to stop it except for during the $H homing command on any of the 3 axis. If you are using UGS Platform it might help to set a macro for your G92 command. When you send the command you should see the Project Homing switch from Machine location to 0.
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Post by jreimers on Sept 15, 2017 16:06:30 GMT
Hey I just noticed something in your video. You have your stepper motors hooked up wrong. When you home, The Z Axis should set first. Then your X and Y should home together. I am guessing you have your Z and Y switched. This could be part of your problem.
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Post by Derek the Admin on Sept 15, 2017 16:15:35 GMT
Good catch Jreimers. I was just commenting the same thing on the YouTube videos.
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Post by Derek the Admin on Sept 15, 2017 16:18:41 GMT
Also, srosti, the switches are not enabled by default in the firmware to by "hard limits." This means that we are intentionally ignoring the switches when it is not in a homing cycle so as to avoid false triggers. The RC low pass filter created by the capacitor on the homing switch and the internal resistors on the board does a pretty good job of filtering, however. You could turn on "hard limits" by typing $21=1 in the command line and pressing enter.
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Post by jreimers on Sept 15, 2017 16:50:35 GMT
It's also interesting that the 'Y' homing switch doesn't stop the router from going beyond the limit when running the file. Any chance you are a 3D Artist or even a Geometry Teacher? The reason I ask is because I am and one of the things you have to learn in the CNC world is that while Y is up and down in 3D animation software and Graphing and Geometry and the rest of the world software, Z is up and down in GRBL.
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