6571
General Mach Discussion / Re: Lost Steps
« on: July 07, 2011, 07:22:27 AM »
Hi Stefan,
Don't know if this helps but I couldn’t get anything, error wise, from your crossover file so went back to look at your earlier files.
I am trying to understand your “surfboard file top” and “surfboard file bottom” but the conventions used are rather unusual, at least for my machine.
You seem to have the X axis as the long axis and Z zero at the bottom of the work rather than the top. The final GCode lines of taking Z to zero, switching off the spindle then returning to X0, Y0 would break my cutter but you seem to have your Z axis reversed.
By convention +Z is usually upward (away from the work) and –Z is downward (towards the work).
I ran this file 4 times without error (just cutting air). I had to exchange the X and Y axis in the code so it would fit my machine table (the Y axis is usually the long axis by convention) and scale it down a bit but other than that it ran OK and my machine returned exactly to Z zero each time (using feeler gauges to check).
The GCode compilation is generally weird particularly with the jumping feed rates from F200 to F13000 for no good reason and there is a small Z axis glitch halfway along the long axis in both directions which I cannot understand so I would only score this 4 out of 10 for nice GCode to use.
Tweakie.
Don't know if this helps but I couldn’t get anything, error wise, from your crossover file so went back to look at your earlier files.
I am trying to understand your “surfboard file top” and “surfboard file bottom” but the conventions used are rather unusual, at least for my machine.
You seem to have the X axis as the long axis and Z zero at the bottom of the work rather than the top. The final GCode lines of taking Z to zero, switching off the spindle then returning to X0, Y0 would break my cutter but you seem to have your Z axis reversed.
By convention +Z is usually upward (away from the work) and –Z is downward (towards the work).
I ran this file 4 times without error (just cutting air). I had to exchange the X and Y axis in the code so it would fit my machine table (the Y axis is usually the long axis by convention) and scale it down a bit but other than that it ran OK and my machine returned exactly to Z zero each time (using feeler gauges to check).
The GCode compilation is generally weird particularly with the jumping feed rates from F200 to F13000 for no good reason and there is a small Z axis glitch halfway along the long axis in both directions which I cannot understand so I would only score this 4 out of 10 for nice GCode to use.
Tweakie.