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z-axis acceleration

Posted: Mon Apr 01, 2013 9:47 pm
by chuck12
How do I speed up z-axis speed or acceleration for my factory files? I wish to do this to minimize end line blobs.

Re: z-axis acceleration

Posted: Tue Apr 02, 2013 6:50 am
by Simplify3D
The Creator firmware is already trying to move your Z-axis pretty fast at the "Rapid movement speed" defined on the Other tab of your FFF settings window. In reality, the Marlin firmware probably has a much lower maximum Z-axis speed and acceleration already defined that override this. I believe the max speed defined in the firmware for the Z-axis is 250 mm/s (or 15000 mm/min) and the max acceleration is really low at just 30 mm/s^2 (vs 9000 mm/s^2 for the X/Y axes!). Even if you tell the Z-axis to move at a fast speed, the firmware will step in and limit it to those values.

You could try increasing DEFAULT_MAX_FEEDRATE and DEFAULT_MAX_ACCELERATION in Marlin's Configuration.h file if you want to move faster. You could also use the M202/M203 Marlin G-Codes to do this over USB.