The tool head is attached with three screws. The print surface can be damaged if the tool head is allowed to fall onto the print surface. With one hand, support the tool head while following removal steps below.
Using the 2.5mm hex key, unscrew the three M5 screws securing the tool head to the X-axis carriage. Remove the rear screw first, followed by the remaining top two screws.
Remove the tool head from the printer by moving the tool head away from the printer.
Note: In previous versions of our tool heads, the Esteps (Extruder Steps Per Unit) were listed along the back of the tool heads for the customer to update. For the new Aerostruder tool head however, the Esteps are now set up within the firmware, and no manual updates are required.
Press the tool head onto the X-axis carriage, aligning the cutouts on the back of the new tool head. Do not pinch any wires between the mount and the carriage.
Secure it to the X-axis carriage by loosely screwing in the top two screws. Leave the top two screws loose.
Loosely screw in the last screw through the rear of the X-axis carriage.
Tighten the top two screws.
Tighten the rear screw.
Cover the connector with the connector cover and attach it to the X-axis carriage using the three M3 screws and the 2.5 mm hex key.
Channel the wires together going to down the vertical pathway on the cover mount, and try not to pinch any of the wires when securing the cover. Slide down carefully into place, and hold while screwing in.
Install the latest version of Cura LulzBot Edition. It is important to have the LulzBot Edition of Cura, as it has preset machine configuration profiles built into it.
Cura LulzBot Edition is available from http://LulzBot.com/Cura.
Plug in your LulzBot Mini 2 3D printer to the power supply and power on your 3D printer.
Once powered on connect your 3D printer to your computer using the USB cable.
Open Cura LulzBot Edition.
From the drop-down menu at the top right-hand side of Cura LE, Select Manage Printers
Confirm that the LulzBot Mini 2 | SL | 0.25 mm is selected, and click Upgrade Firmware.
Select Automatically Update Firmware. The Update EEPROM checkbox should be checked by default. Close any dialog windows after the firmware has been updated.
Note: Always heat the hot end to extrusion temperature before attempting to remove filament. If switching between different material types, set the hot end to the approximate average extrusion temperature of the two materials.
Once the hot end has reached the extrusion temperature of 205, remove the test filament used during factory calibration by entering 5 for the Extrusion amount in Cura LE. Click the Extrude button. Change the value to 60 and click the Retract button.
Once filament has retracted 60 mm, squeeze idler inwards, and pull the filament out. You may need to loosen the idler slightly by turning the silver idler wheel clockwise.
Tighten the idler by turning the silver idler wheel counter-clockwise if loosened.
Filament Loading Tip: Cutting the filament at an angle will help with inserting into the extruder.
Load the sample filament into the extruder. Squeeze the idler arm inward and insert the filament into the extruder filament guide.
Enter 60 in Extrusion amount and click the Extrude button.
Purge factory filament by continuing to select the Extrude button until the hot end extrudes material.
Level the X-axis by clicking the Level X Axis button.
You may need to fine tune your Z-axis offset, also known as Z-offset, to get the perfect first layer. Follow the instructions in the Advanced section of the LulzBot Mini 2 User Manual for detailed instructions.
More Information: LulzBot Mini 2 User Manual - Adjusting Z-offset
Adjust your Z-offset during the first layer of the print by following these steps:
Press in on the Graphical LCD Controller knob on the LulzBot Mini 2 and select Tune.
Select Z Offset
Rotate the knob counterclockwise to bring the hot end nozzle closer to the print surface. Rotate the knob clockwise to move the hot end nozzle farther away from the print surface.
Note the Z-offset value once adjusted. Follow the instructions at LulzBot.com/z-offset to store your ideal Z-offset.