I spent a long time working out the calibration on my Mendel Prusa 3d printer. I had numerous problems with the electronics and the software and I didn’t have a working reference point to help solve them. This is one reason why I kept many of the familiar systems of my Prusa Mendel printer as a part of this modified WhiteAnt printer.
The calibration for the modified WhiteAnt hasn’t been difficult.
I'm using Kiliment-Sprinter-a352585 firmware with Pronterface. Here are the following changes I made from my Prusa Mendel setup:
In Pronterface, I increased the print bed. This can be done by opening the options window from the settings tab and changing the build dimensions. In my case, instead of 200mm x 200mm x 80mm, I placed the values 360mm x 240mm x150mm.
In the firmware, I changed the build envelope size. Under the tab Configuration.h these values were substituted:
Const int X_MAX_LENGTH = 360;
Const int Y_MAX_LENGTH = 240;
Const int Z_MAX_LENGTH = 150;
Next I set the calibration for the X,Y,Z, and E steps. For my Prusa Mendel they were:
axis_steps_per_unit[] = {79.207, 80, 2568, 1394};
For the modified WhiteAnt the values were substituted with these:
axis_steps_per_unit[] = {39.9, 40.90, 329, 1300};
Interestingly, the X,Y values are half of the original values when the stepper motor is increased one size up. The Z-axis is way off due to changing from a metric 8mm rod with a 1.25 pitch to a SAE 3/8" lead screw with 10 threads per inch. The extruder is basically the same since no change in that system was made.
These are all of the changes that I made. All my previous Skeinforge and Pronterface settings I left in place. There is always room for improvement, but for now I’m happy to keep my setup at it’s present configuration.
The calibration for the modified WhiteAnt hasn’t been difficult.
I'm using Kiliment-Sprinter-a352585 firmware with Pronterface. Here are the following changes I made from my Prusa Mendel setup:
In Pronterface, I increased the print bed. This can be done by opening the options window from the settings tab and changing the build dimensions. In my case, instead of 200mm x 200mm x 80mm, I placed the values 360mm x 240mm x150mm.
In the firmware, I changed the build envelope size. Under the tab Configuration.h these values were substituted:
Const int X_MAX_LENGTH = 360;
Const int Y_MAX_LENGTH = 240;
Const int Z_MAX_LENGTH = 150;
Next I set the calibration for the X,Y,Z, and E steps. For my Prusa Mendel they were:
axis_steps_per_unit[] = {79.207, 80, 2568, 1394};
For the modified WhiteAnt the values were substituted with these:
axis_steps_per_unit[] = {39.9, 40.90, 329, 1300};
Interestingly, the X,Y values are half of the original values when the stepper motor is increased one size up. The Z-axis is way off due to changing from a metric 8mm rod with a 1.25 pitch to a SAE 3/8" lead screw with 10 threads per inch. The extruder is basically the same since no change in that system was made.
These are all of the changes that I made. All my previous Skeinforge and Pronterface settings I left in place. There is always room for improvement, but for now I’m happy to keep my setup at it’s present configuration.
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