User's Manual Part 2

CHAPTER 8. OPERATIONAL TIPS 212
until the tip of the extruder is just touching the build plate.
When you a r e at th e c or r ect h ei g ht, click the “Just Right”
button.
Also, though unlikely: check that the build plate is maintain-
ing a consistent height from the extruder nozzle over the build
plate shuttle’s range of motion (since if the height isn’t consis-
tent, that first layer may not be getting consistent “smooshing”).
Check the Z height with the extruder at the middle of the build
plate; then slide the build plate shuttle forward so that the ex-
truder i s at the edge of th e build plate an d confirm that th e Z
height hasn’t changed. If the Z height is changing from middle
to edge of build plate, then see Section 10.6 for a discussion of
checking and correcting build pl a te shutt l e alignment.
8.2.3 First layer print speed and thickness
“PRINT SETTINGS”(inthePolarCloud,specifiedunder“Object”,
the object in question, “3D Print”) has a couple of settings that
may a↵ect the printing of the first layer and therefore its ad-
hesion properties. See in particular the “ADVANCED”settingof
“Speed”, “First Layer Speed”, and the “ADVANCED”settingof
“Quality”, “Initial Layer Thickness”.
8.2.4 Temperature and adhesion
With PLA filament, if you print at too high of a temperature,
the PLA will curl slightly when it cools along the edges, which
might pull the edges up o↵ the build plate over time. If you’re
using Polar 3D filament, we recommend 185°C. PLA fil ament