Turn on the printer.

Check and make sure that the temperature reading for the hot end is accurate. It should be reading room temperature. If it reads 0, or a high number, then there is an electrical problem.

Check and make sure that the heat sink fan is running.

Hot-tightening is the last mechanical step before your V6 is ready to go! Hot-tightening is essential to sealing the nozzle and heatsink together to ensure that molten plastic cannot leak out of the hotend in use.

Set the hotend temperature to 270°C. Allow the hotend to reach 270°C and wait one minute to allow all components to equalise in temperature.

Use an adjustable wrench to hold the heater block in place while you tighten the nozzle using a 7 mm crescent wrench.