On Saturday, December 22, 2012 11:44:52 PM UTC-5, Jim wrote:
I'm pretty sure I don't have the Acme rods so this is probably the right one. How do I know if I have the 5:1 extruder motor?
If you try and extrude 5mm and instead it pushes out 25mm (about an inch) (or the opposite, you ask to push out 5 mm and it only does 1mm) then you are using the wrong constant in the configuration file. (Also, visually the 5:1 has a gearbox mounted to the stepper that reduces the stepper output by a factor of 5:1).
The correct axis_steps_per_unit for the 5:1 extruder is: 471.5
(I also found out that I have the acme rods.....after printing a printout that is extra tall ;>)
Jay