LulzBot Mini User Manual

Advanced Usage
4.1 Intro
After you become familiar with printing using the default settings, a
few advanced techniques may help in getting better and more consistent
prints from the Mini 3D printer. Some of these instructions are items
and materials not included with the Mini. With any of these additional
items or materials, follow safety and usage guidelines as instructed by the
manufacturer.
4.2 Changing nozzles
The Mini 3D printer ships with a standard 0.5mm nozzle which allows
small-layer resolution and layers up to 0.4mm thick. Although the 0.5mm
nozzle will be perfect for most printing applications, LulzBot may offer
smaller and larger nozzle sizes in the future.
The Hexagon hot end is the new all metal hot end used on LulzBot’s
™
.
In most cases the nozzle is best changed when the hot end is slightly
warm. NEVER try to remove the nozzle when the hot end is at extrusion
temperature. At higher temperatures the threaded extension expands in
the nozzle causing the nozzle to bind if turned. Heat the hot end to 160°C.
This will soften the plastic inside the hot end and allow the nozzle to be
loosened off the threaded extension. Power off the printer and before it
cools unscrew the nozzle. Take care when removing the nozzle while the
hot end is hot. Wear leather gloves or use a towel to turn the nozzle off the
hot end.
To change the nozzle you will need a 7mm wrench and slip-joint or
tongue-and-groove pliers. Use the pliers to hold the rectangular aluminum
heater block away from the heater resistor and thermistor wires.
Using the 7mm wrench, turn the nozzle counter-clock-wise. Make sure
the nozzle is turning off of the heater block. Do not allow the heater block
to turn. This can put strain on, and possibly damage, the wiring.
Once you have removed the nozzle you can then thread on the other
nozzle size you would like to use. Make sure the nozzle has threaded
correctly into the heater block before trying to turn it with the wrench.
Turn the nozzle clock-wise until it tightens against the heater block.
The Mini 3D printer has a print surface of PEI. This printing surface
can be used without any additional bed treatment. Keep the PEI sheet
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LulzBot Mini Specifications

General

Tweezers	Yes
Certification	CE, FCC, WEEE
Product color	Black, Green
Viewing window	No
Maximum print platform temperature	120 °C
Package weight	11330 g
AC input voltage	100/240 V
Power consumption (typical)	150 W
Print technology	-
Printing material	ABS, HIPS, Nylon, PVA, Polycarbonate (PC), Polylactic acid (PLA)
Layer thickness (max)	0.5 mm
Layer thickness (min)	0.05 mm
Maximum build size (WxDxH)	152 x 152 x 158 mm
Filament thickness supported	3 mm
Maximum vertical build speed	275 mm/sec
Printing compartment volume	3.65 L

Weight and Dimensions

Depth	435 mm
Width	340 mm
Height	385 mm
Weight	8550 g