While using backlash compensation, the
machine appears to be losing steps very badly.
I have spoken with John Kasunich about this in some
detail, in IRC.
What appears to be happening, is that during programs
that use a large number of directional changes, the
compensation movement ramping is happening faster than
the stepper motors can react, causing lost steps to
This happens no matter how fast or slow the machine is
Removing backlash compensation (setting it to zero)
removes the error.
Examples can be seen here -
This is the "dome" program that comes on the programs
This error is also very evident during text engraving
programs, due to the same types of high numbers of axis