INVENT3D
TM
Printer Operating Instructions and Troubleshooting Guide
AST2 © 10/26/16
Page 28
Probable Cause 9:
Filament may be fractured below the extruder gear.
Remedy
: Loosen the silver thumbscrews and remove the extruder top. Remove the extruder
motor. While the hot end is heated, use pliers to grip the top of the filament above the hot
end and pull up to remove. Replace the extruder motor, extruder top, and silver
thumbscrews. Continue with the filament replacement process.
Probable Cause 10:
Non-recommended low quality filament may have been used.
Remedy
: Low quality filament can have inconsistent diameter or be made from poor quality
feedstock. When piece of filament with a very narrow diameter passes through the filament
drive, sufficient pressure is not applied to the filament by the extruder motor gear. Tighten
the pressure adjustment screw slightly and then back the filament out of the filament drive
by selecting “
Preheat
” from the Info screen, and then selecting “
Move Axis,”
then “
1mm
,”
then “
Extruder
” and rotating the knob counter-clockwise. Discard filament. Loosen the
filament pressure adjustment screw back to the standard business card width. Reinsert
recommended high quality filament.
Problem:
Filament will not stick to board
Probable Cause 1
: Not using quality PLA filament.
Remedy
: It is important to use quality PLA from a recommended supplier. It is
important that the diameter is consistent and the feedstock is good quality. Poor quality
PLA may not stick properly to the print surface. Remove the incorrect filament and
replace with quality filament from a recommended supplier.
Probable Cause 2:
Print board too far from hot end.
Remedy
: If it appears that the print board is level but simply too far from the hot end,
rotate the Z-axis limit switch end stop counter-clockwise half a turn so that the limit
switch engages closer to the hot end. Rotate another half a turn if the problem is not
solved. If filament is not sticking in one specific place, the print board is not leveled
properly. Stop the print, remove the part and allow the hot end to cool down, and level
the board. Initiate a print to verify that the problem is resolved; repeat leveling process
if the problem persists.
Probable Cause 3:
Wrong print board material.
Remedy
: Filament may not stick well if not using BuildTak. Try to re-level the print
board to close the distance between the hot end and print surface, but the best solution
is to apply BuildTak to print board.
Problem:
Filament shavings in extruder
Probable Cause:
Filament pressure adjustment screw too tight.
Remedy
: If there are filament shavings in the filament drive, too much tension is being placed
on the filament by the extruder motor gear. Locate the filament pressure adjustment screw
