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large gear extruder LGX Lite eXtruder (with motor)New Features: stronger housing; increased resistance to heat; and that Bondtech black Look : ) micro form factorfeatherweight (48g)small footprintenhanced filament grip. Includes full size LGX Large Gears, maintenance windows and filament tension lever with 3 presets (open; rigid; flexible). This extruder only supports 1. 75 mm size filament. Technical Specification LGX LITE EXTRUDER e steps value : 562 using 16 microsteps; 1124 using 32 microsteps.
micro form factor
featherweight (48g)
small footprint
enhanced filament grip.
Includes full size LGX Large Gears, maintenance windows and filament tension lever with 3 presets (open; rigid; flexible).
This extruder only supports 1.75 mm size filament.
For Klipper users
rotation_distance = full_steps_per_rotation * microsteps / steps_per_mmrotation_distance = 200 * 16 / 562
rotation_distance = 5.7The above calculation assumes the following parameters:
- stepper motor is a 1.8 degrees motor hence 200 as full steps per rotation;
- microsteps are set to 16;
- e-steps value recommended for the LGX® Lite is 562.
To use the LGX Lite, run the stepper motor with currents between ~0.45 and ~0.60A:
Be vigilant regarding the stepper motor surface temperature.
Keep it cool enough to touch. Lower Vref otherwise.
It is very hard to read the current being fed to stepper motors. To determine that current we rely on the Vref value. The Vref value is a voltage reference measured in VDC that can be read using a multimeter. It helps us setting the current output of the stepper motor driver.
Different 3D printer mainboards use different stepper motor drivers. Each type of stepper motor drivers has its own formula to calculate the required Vref to get a specific current. Here are some examples:
The LGX Lite eXtruder is the second Bondtech extruder to present a pre-tension mechanism that includes an easy to use lever for users to release the tension or define it as one of 2 different settings.
Find below the illustrations and descriptions that show the available options.
When facing the LGX eXtruder push the lever all the way to the left.
Use it to load or unload filament without pressure from the drive gears.
When facing the LGX eXtruder push the lever all to the left and then 1 position to the right.
Use it to work with rigid materials.
When facing the LGX eXtruder push the lever all to the left and then 2 positions to the right.
Use it to work with semi-flexible and flexible materials.
Preferably, you should always use the extruder attached to the stepper motor when you mount it on a printer.
If you need to put a plate in between the stepper motor and the extruder please notice the absolute max supported thickness is 2.6mm.
To use a plate in between the stepper motor and the extruder, you need to replace the stock rear plate of the extruder with the printer’s plate (thicknesses between 2 and 2.6mm, 2.5mm being the optimal value).
Don’t use a plate in between without removing the rear plate.
The LGX® Lite features 4 mounting patterns:
All except frontal mounting holes on the LGX® Lite require to place a M3 square nut inside the housing to act as reinforcement. The holes with square nuts are M3 thread and 5 mm deep (till bottom of the square nut).