Hi everybody,
I’m a french happy user of a K8200 for nearly a year. (Marlin V2 now)
I recently had an idea for minimizing bad effects of Z wobbling or step missing on X and Y axis when the nozzle hit some object’s corner cooling too fast and rising above the printing level.
The idea is homing X and Y axis on each layer using the g-code line “G28 X Y” in Slic3r printer’s settings, “Custom G-code” tab, “Layer change G-code” field.
It works !
The Z wobbling waves disappear (printed object’s surface is better than ever).
If there’s a gap caused by a step loss in one layer, the next layer is perfectly aligned.
If I place the object near X and Y origin, the time loss by homing function is not too high.
But !
Something happens in the homing G28 function that scales the Z axis movement by a factor of + or - 20% making the printed object taller or smaller than the model size.
I just can’t explain why !!
Even in the source code of the Marlin firmware I can’t see anything that toutches the Z axis on a X and Y G28 command ?
Somebody out there can explain that ?
Olivier