SeeMeCNC Rostock MAX v2 User Manual page 31

Fig. 2.4-6: Nozzle at the center, 0.2mm above the glass.
As the script runs, your focus should be on the nozzle where it pauses. You want to compare
the gap at the tower base to the gap at the center.
If the nozzle at the tower base is higher at the pause point in comparison to the center, you'll
want to turn the screw for that tower's end-stop counter-clockwise. Think "Turn Left to Lower".
If the nozzle at the tower base is lower at the pause point in comparison to the center, you'll
want to turn the screw for that tower's end-stop clockwise. Think "Turn Right to Raise".
Repeat this process for each of the three axes. You can adjust a single axis at a time, or you can
do two or all three. Doing all three at once may make you crazy unless you're a good juggler. Set the Z
height and Tower Cal macro each time you make a change to an end-stop screw.
When you're done, you need to re-set the Z height as it will have changed due to the calibration
process. Once you've re-set the Z height, run the Tower Cal macro again. Pay close attention to the
distance between the nozzle and the glass bed.
If from the center position, the nozzle goes down toward the glass at all three towers, you'll
need to change the Horizontal Radius value in the EEPROM. Open up the EEPROM table editor and
scroll down until you see the field marked below.
Fig. 2-4.7: Horizontal Radius.
You'll want to raise this figure by 0.2. Run the Tower Cal macro after each change to check the
effectiveness of the change.
If from the center position the nozzle goes up from the glass at all three towers, you'll want to
lower the Horizontal Radius by 0.2. Run the Tower Cal macro after each change to check the
effectiveness of the change.
Rostock MAX v2 User's Guide
2 – Installing MatterControl and Calibrating the Printer - 31