What’s the Function?
Simple explanations of M3 Features
Z-Fine Adjust Knob is for last-minute changes to the distance
between nozzle & bed.
Spool Holder keeps lament spool secure during printing.
Heated Build Platform (HBP) controls glass bed temperature.
Z-Axis Leadscrew rotates to move bed up & down.
Z-Axis Limit Switch sets “home” position for Z-axis motion.
Raspberry Pi Housing shields Raspberry Pi.
RAMBO Housing shields and cools RAMBO board.
Reset Button resets the control electronics.
USB Port allows communication between external computer and RAMBO.*
Filament Guide Tube guides lament from spool to lament drive.
Print Head deposits printing material and cools print.
X-Axis Belt keeps extruder in-sync with X-motor.
X-Axis Rail guides extruder during side-to-side movement.
X-Axis Limit Switch sets “home” position for X-axis motion.
Filament Guide guides lament from spool to guide tube.
Y-Axis Linear Rail guides bed during front-to-back movement.
Y-Axis Belt keeps bed in sync with Y-motor.
M3 Serial Number is a unique identier to help track the printer.
Y-Axis Limit Switch sets “home” position for Y-axis motion.
6-Position Power Connector brings power to M3.
Filament Drive pulls lament into extruder.
Extruder Wire Mount locates and clamps connectors for extruder.
V4 Hot End melts lament and controls extruded diameter of lament.
40x10 mm Fan cools lament drive.
40x15 mm Fan helps cool printed layers (as needed).
*USB use is not recommended—see Software Setup on page 8.
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