User's Manual Part 2

CHAPTER 10. PRINTER MAINTENANCE 231
Plate
10.2 Lubrication
There are five spots which can benefit from occasional lubrica-
tion: the bottom of the threaded Zrod,andaroundthebush-
ings on each of the four steel rods (two rods for the build plate
shut t le, and two rods for the gantr y ); see Figure B.1.Werecom-
mend Tri-Flow lubricant (often used on bicycle chains), which
is a “dry” lubricant. Put a drop of the lubricant at the bottom
of the threaded Z rod, and a drop both in front of and behind
each bushing on each rod.
In addition, if you are hearing any squeaking from the printer,
you may wish to apply a drop of lubricant at the top of the
threaded Zrod,andonthedrivepinion.
For a video demonstration see:
Polar 3D youtube video: WWBD – Care and Maintenance
10.3 Clean filame nt drive gear
Over ti m e, small particles of filament may start clogging up the
filament drive gear in the print head.Afilamentjaminthe
nozzle, or low qu al ity (flaky) filament, or frequent changes of
filament (pushi n g filament in or pulling it out) may accelerate
this. So occasionally you should remove the block from over the
filament drive gear, clear out any accumulated filament dust or
particles, and reinstall the block.