Dremel 3D40 FLEX Original Instructions Manual page 19

FIG. 2
5. Thread tip of new filament through guide tube,
place spool on spool holder, replace spool door by
aligning locking tabs and rotating clockwise, see
figure 1.
Tap "Next" on touchscreen.
6. If changing existing filament, 3D40 FLEX will
automatically purge existing filament.
7. When Feed Filament screen appears, tap "Next" on
touchscreen and thread filament coming from guide
tube into extruder intake until extruder feeds
through on its own, see figure 2.
8. Filament will be drawn into the extruder and begin
to exit from the hot extruder tip.
NOTE: Your Dremel 3D40 FLEX was tested by
building objects before leaving the factory. These
test objects may have been made with a different
filament color than you are using. Therefore, a
small amount of filament may be remaining in the
extruder.
Guide Tube Filament
9. When new filament appears from extruder tip, tap
"done" on touchscreen to complete filament load
process, return to main menu, and calibrate
extruder. Carefully remove excess filament without
touching hot extruder tip. If necessary, carefully
remove debris from extruder tip with needle nose
pliers.
WARNING
!
WHEN CLEARING DEBRIS. DREMEL 3D40 FLEX WILL
NOT WORK PROPERLY WITH A DAMAGED
EXTRUDER TIP AND WILL REQUIRE REPLACEMENT.
10. Close 3D40 FLEX lid and door.
19
Filament Guide Extruder intake
USE EXTRA CARE NOT TO
DAMAGE THE EXTRUDER TIP