LulzBot TAZ 4, User Manual

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4.5. HOBBED BOLT
After you apply the PET sheet to the glass, you can push out any bubbles
or smooth them down using a credit card or stiff and dull piece of plastic.
4.5 Hobbed Bolt
The plastic filament is pulled through the extruder by a hobbed bolt. After
repeated use, the teeth of the hobbed bolt can become filled with plastic.
Using the brush or pick from the printer kit, clean out the hobbed bolt
teeth. If an extruder jam ever occurs, remove the plastic filament from the
extruder and clean out the hobbed bolt.
4.6 Software
LulzBot will release a new stable version of the software, typically every
quarter. It is best to update the software every time a new version is
released. The software is as important as the hardware in printing quality
parts. Each quarterly software update can bring advances in print quality.
The files are available at
http://download.lulzbot.com/TAZ/ . You can
also find updated software versions in the Support/Downloads section of
LulzBot.com.
4.7 Belts
Over long periods or after extensive relocating of the printer you may need
to re-tighten the belts on the TAZ 3D printer. For the X axis, using the
2.5mm hex driver, loosen one of the belt clamps. The belts clamps are
located on the X axis carriage. To loosen the belt clamp, loosen the M3
screws on the clamp. Using the needle nose pliers, pull the belt tight. While
holding the belt tight, tighten down the M3 screw. The Y axis belt can be
tightened using the same steps as the X axis using the belt clamps found
on the bottom of the Y axis plate. Make sure not to over tighten the belts
as this can cause unneeded stress on the printer.
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