What do you use for Z steps?

I am using 1/16 step for my X and Y with great success. I am however having issues with my Z running 1/16 step. What should I be using for my Z. Do I want to compensate for a 1/16 or use a 1/8.. Will I get the same layer detail using 1/16 vs 1/8. Also I like how fast the Z-up is using 1/8.

Here are the options.
jumper Yes/No step size
1 2 3
no no no full step
yes no no half step
no yes no 1/4 step
yes yes no 1/8 step
yes yes yes 1/16 step


I am using ReplicatorG26 with RAMPS 1.4 using Marlin firmware. 1.0.0.0

It seems that the Marlin firmware is not looking at my machine.xml file for the geometry information. Marlin is however using the .xml file for everything else.

I would like for it to look at my machine.xml file for my stepspermm, so I cam make changes on the fly without having to do it from the firmware. I beleive it is only looking at the folowing:

#define DEFAULT_AXIS_STEPS_PER_UNIT {80,80,3200/1.25,1380}


Thanks

Jeff

Edited 1 time(s). Last edit at 01/24/2012 06:34PM by Axim2012.

After much tinkering I was able to get a good print using 1/16 step for the Z using the following below. 20x20x10 Calibration block is dead on 20mm x 20mm x 10mm...

#define DEFAULT_AXIS_STEPS_PER_UNIT {79,79,8500/1.25,1380}

I still would like to use the Machine.xml for these adjustments if anyone knows how to bypass these settings.

Jeff

I think machine.xml will only work with the Makerbot firmware. Repg uses machine.xml and converts the Gcode to binary which is sent to the Makerbot firmware. In Reprap mode the gcode is sent to the firmware, so it has to have the conversion factors.

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