Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: dec@rocketmail.com on January 14, 2014, 06:22:32 PM
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Hi all,
I've somehow gotten my units all mangled and now Mach3 seems to ignore g21 commands...
I am trying to setup a new xml for a 3d printhead I just built. My workflow goes Rhino (mm) to Slic3r (mm) into Mach3 (inches). In the past, I have just included g21 in the code and all worked fine. But after fiddling with the motor tuning (for the sake of the print head), now when I inter G21 in the MDI, the feedrate is adjusted (x25.4) but the DRO does not, and so the machine tries to make a huge part.
Can someone set me straight?
Thanks!!!!!
dh
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If your workflow is in mm's, then set up Mach3 in mm's. It'll save you a lot of headaches down the road.
Anytime you have an .xml that doesn't behave properly, imo it's best to delete it and start over from scratch. Once you get a good working .xml, make a backup of it.
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Hi Ger21
I just cloned an xml, changed the native units from inch to mm, and the DRO didn't change.
So just to be sure, I went to the MDI and entered g21. Nothing changes
I move the z axis 1.00 unit, and it moves 1.00"
Enter g20 in the MDI and the DRO changes numbers.
Now if I want to move 1.00" the DRO reads .0394
So, it's like g21 and g20 are reversed... (?)
I've tried with "Lock DRO to setup units" ticked and without.
I have a load of in/outs, macros, Ethernet SmoothStepper, etc. that make the thought of a fully-virgin setup really unappealing. Is there any way to work through this one issue?
TIA
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Are your steps/unit set correctly? If you change the native units, you need to change the steps/unit as well.
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lol - exactly. With "mm" selected as native units, Divided the steps by 25.4.....
Sorry for the brain fart!
thanks!