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Rostock MAX Z tower homing
Posted: Sun Jun 23, 2013 1:49 pm
by Nylocke
For some reason whenever I send G28 to the printer, the Z tower homes way faster than any other tower, generally ramming the platform into the Z tower. It didn't do this when I originally set it up, and developed shortly after my first print, after I changed the firmware because I had it set up incorrectly (it only used 1/4 of the bed because I accidentally told the firmware to not let the printer go below 0 on the X and Y axes) and it seemed to make everything fail for some reason. Would anyone have an explanation? I'm using Marlin for the MAX and LCD Display.
Re: Rostock MAX Z tower homing
Posted: Sun Jun 23, 2013 2:26 pm
by Polygonhell
Check te pulley set screws are tight on the steppers.
Re: Rostock MAX Z tower homing
Posted: Sun Jun 23, 2013 2:39 pm
by Nylocke
I know for sure the pulleys are secure on the stepper shafts. There is no problem with loosing steps or anything like that, I think there may have been some software thing I may have accidentally changed or modified that is making this issue develop, but I don't know for sure. I will experiment with my firmware for a bit. any extra suggestions would be awesome though
Re: Rostock MAX Z tower homing
Posted: Sun Jun 23, 2013 2:47 pm
by Nylocke
I figured it out.
Its in the firmware, the firmware automatically scales the homing speed by the distance between the Axis min and Max pos so that each axis arrives at home at the same time. I had changes it so the distance between X and Y min and max pos was 280, while for the Z it was 550, so it scaled the speed with these values, and made the Z axis home much faster.
Hope this can help other people if they want to have software limits to help keep their printer from destroying itself...