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literally… i have about 2000 hours on my first machine. Built a second machine, much stiffer, tighter etc… rail size 600x900.
x-controller, all Inventables parts…
here’s the problem…
my work zero WILL NOT set to 0,0…
it homes perfectly to 0,0… every single time. but no matter what i have tried, it starts every cut at .5, 0.
so i was trying to skim the wasteboard, and it will not start cutting at 0,0. it jumps out to approximately .5" in the x position before it starts the cut, then travels the perfect distance, at least it crashes into the stops.
when the job finishes, it returns perfectly and repeatably to 0,0.
is there a safety buffer setting or something in GRBL??
That might be a clock-issue… I have seen that too some time ago when I designed on one computer and carved from a different one, when computer #1 was still open with the project.
I have positive stops on x and y rails that I use to orient the machine before powering up the controller. So that sets my 0,0 point for each new carve. I use corner stops on the wasteboard to orient material on this particular machine.
As needed, I jog to the corner on any other workpiece, set x,y,z-zero there.
But in this case, I want my wasteboard skim route to be anchored at 0,0 as that’s where my machine zero is. The final size is 100% perfect, in every direction. The only issue is the offset to the right.
At 0,0, (where the machine dutifully returns after a cut) the 19mm cutter doesn’t hover over any if the cut area…it is perfectly centered at 0,0 and the outermost corner of the cut area is at .5,0
Are you sure you’re not having a mechanical issue?
Are you familiar with gcode? You could rewrite the square to have it start at the front left instead of the back right. I can help with that later.
I don’t know what the mechanical issue might be, as it is going home to 0,0. If there was a belt issue, or bind somewhere, it seems that it wouldn’t go back to its home position freely.
And not familiar with gcode, past the steps and values need for machine calibration and whatnot
