Unclog and/or clean your MakerGear hot end.
The Cold Pull Method is an effective method for cleaning your MakerGear hot end. It is especially helpful when changing type or color of filament as well as preventing clogs.
The Cold Pull method's purpose is to remove foreign matter or old filament from the hot end use a combination of heat and force.
Open your printer's OctoPrint interface and click on the 'Temperature' Tab. In the Temperature tab, heat your hotend to print temperature for your material by selecting the material from the drop-down menu next.
Click on the 'Control' tab and extrude 25 mm of filament. If you are fighting a bad clog, you may need to heat your hotend to 25°C above the high end of the print temperature and then extrude while pushing the filament into the filament drive with your fingers. You need to get some filament to extrude. (even 1/4 in is enough)
Go back to the 'Temperature' Tab and turn the hot-end off. Wait for your hot end to cool down to room temperature (~25 C).
Once you have reached room temperature, heat the hot end to 10 degrees above the transition temperature of the filament. (80 for PLA and 120 for ABS).
Once you are at the target temperature, go to the Terminal tab and type
M302 S60 (for M3 and M2 Series printers)
M302 P1 for (for Ultra One printers)
(this allows the printer to extrude with the hot end above 60 degrees and is only a temporary change).
Retract 150 mm of filament, then remove it from the filament drive. (You'll need to pull hard sometimes)
For maximum effectiveness you may need to repeat the process more than once.