MakerBot Replicator 2X User Manual page 30

LOADING MAKERBOT FILAMENT
30 ONBOARD OPERATIONS
CONTINUED
filament. Maintain pressure for another
five seconds and then let go.
7. Stop Extrusion
After a few moments, you should see
a thin string of plastic come out of the
extruder nozzle. The filament might
curl and then straighten; this is normal.
Press the M button to stop extrusion.
NOTE: Don't be surprised if the plastic
that initially comes out of the nozzle is not
the color you expected. This is filament
left over from testing. Wait until you see
the color that you loaded come out of the
nozzle before you press the M button.
8. Reattach the Filament Guide Tube
Push the guide tube back into the
opening on the top of the extruder.
9. Remove the Extruded Plastic
Wait a few minutes for the extruded
plastic to cool, then pull it away from
the extruder nozzle. You can discard
this extra plastic.
CAUTION: Do not touch the nozzle; it
may still be hot.
Don't leave plastic clinging to the
extruder nozzles. This can cause
newly-extruded plastic to stick to the
nozzles instead of the build plate.