User's Manual Part 1

CHAPTER 2. START PRINTING 31
Figure 2. 3: Manual Printer Controls screen: set the temperature
where you set the desired temperature, on that same
screen cli ck the “Extrude 1mm”buttonseveraltimes,
to extrude a few millimeters of filament.
(c) Note that if the printer already had a bit of filament in
the extruder – and the Polar3D printers get a test print
performed at the factory so even a brand-new printer
may have a bit of filament in the extruder – you may see
molten plastic leaking out as the printer heats up, even
before you tell it to extrude filament. But you want to
see the printer feeding in and ext r ud i n g your filament
–thefilamentyoujustloaded. Seeingastringofyour
filament get extruded as now molten plastic confirms
that your filament is properly loaded, and you’re ready
to print!