C2 User Manual, Release 1.0.0
Offset.
2.2.2 Fine Tune Wizard
If you are experiencing the nozzle dragging (too low) or your prints are not sticking (too high), you can fine-tune your
Z-Offset. It’s a little more work, but you will tune your offset by actually printing on the bed to get the perfect height.
Your Robo R2 will print a series of vertical lines, one at a time. Between each pass you can increase or decrease the
Z-Offset value as needed. To use the fine-tune offset wizard, follow these steps below:
Note: It is very important to make sure that the print bed is level by adjusting the thumb screws below the print bed
before starting this wizard.
1. To start, select ‘Utilities’ from the home screen, then select ‘Fine tune offset’. Select the material currently
loaded in the printer. Then the wizard will ask you which corner you’d like to start from. This simply sets where
the printer will start printing out the test lines. You can start from whichever corner you prefer.
2. Once the printer homes and positions itself to begin testing, you will see a visual reference on the screen to help
you know what to look for in order to find an ideal Z-Offset value.
3. You will come to the “Adjust Offset” screen, where you can set the adjustment increment, move the bed up or
down, and test the offset. We recommend testing the offset first so you can get a visual reference to fine tune
the current offset. Move the bed up and down with the provided buttons on screen, and test with the ‘test offset’
button to see if it looks satisfactory.
4. When you’ve found a satisfactory Z-Offset value, press the forward arrow in the top right corner and select
‘Save’ to finish the wizard.
2.2.3 Manually setting Offset in EEPROM Manager
If you are a printing veteran and are comfortable with manually setting your Offset, you can do so under Utilities>
Options> EEPROM> Home Offset. In the “Z” screen you will see the value of your current Offset, as well as two
arrows that will increase or decrease this value. The arrows are arranged so that they correspond with raising or
lowering the bed. A smaller value brings the bed closer to the nozzle, while a larger value increases the distance away.
If your Offset seems close but prints are still not sticking, you can decrease the value by 0.1mm - 0.2mm and try again.
Generally only small changes may be needed.
2.3 Loading and Unloading Filament
Loading Filament
From the home screen select ‘Utilities’
18 Chapter 2. Operation
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