Bondtech LGX® Shortcut Mosquito - Prusa MK3S

LGX Shortcut Upgrade Kit for Prusa MK3S and MK3S+. It uses a short Mosquito hotend from Slice Engineering with a Bondtech heatsink.

Requires an X cart

Master all materials

The LGX Shortcut Mosquito Print Head is a special device that includes the LGX™ Large Gears eXtruder and the LGX Shortcut short filament path Mosquito hotend that masters all materials and excels especially in soft and flexible materials.

Direct drive upgrade

This LGX-based upgrade kit is an easy-to-install replacement for the standard direct-drive extruder. It requires the accessories included in the LGX Shortcut Mosquito Accessories for the Prusa MK3S package and the LGX Shortcut Mosquito hotend.

Easy to install

Very intuitive and easy to install, with the extruder facing the X-carriage, reducing the distance between the nozzle and the x-axis.

Leading Grip Power

The LGX is the Bondtech extruder with the highest filament grip due to its new large drive wheel that engages more teeth with the filament.

MMU compatibility

This upgrade kit is not compatible with any MMU version.

Custom firmware required

You must update your Prusa's firmware to use this product.

Technical specification

• LGX™ Extruder
• e-step value: 400 using 16 microsteps;
• Drive wheel: hardened steel;
• withdrawal speed : 35 mm/s
• retraction distance (direct pull) for rigid materials: 0.4 mm
• retraction distance (direct drive) for soft materials: 3 mm
• Max operating temperature: 70°C
• Max. tightening torque on the extruder screws is 0.3 Nm
• Max. tightening torque on the heat sink/cold block screw is 0.6 Nm
• LGX™ DD net weight: 218.6g
• Package dimensions: 80x103x73 mm
• Package weight: 269 g
• Custom stepper motor for Bondtech LGX™
• PH-06AWJ connector
• 2 phases
• DC 5.5V
• Max 1.0A/phase ( To use LGX, run the stepper motor with currents between ~0.45 and ~0.65A: Pay attention to the surface temperature of the stepper motor. Keep it cool enough to touch. Otherwise, lower Vref.

• Class B motor, rated up to 130°C ( Maximum recommended environment: 70°C. Max temperature at this environmental temperature can go up to 130°C due to the self-heating.)

How to change the current using Vref

It can be difficult to read the current fed to stepper motors. To determine this current we rely on the Vref value. The Vref value is a voltage reference measured in VDC, which can be read using a multimeter. It helps us set the current output of the stepper motor driver.

Different 3D printer motherboards use different stepper motor drivers. Each type of stepper motor driver has its own formula to calculate the required Vref to get a certain current. Here are some examples:

TMC stepper drivers.

• The formula for these drivers is Vref = ( I * 2.5 ) / Imax
• Where I is the target current value measured in A; and Imax is 1.77 on regular mode and 1.2 on SilentStepSticks mode.

Pololu A4998.

• The formula for these drivers is Vref = I * 8 * R
• Where I is the target current value measured in A; and R is the Sense Resistor value, it depends on which board you use. Melzis uses 0.1, Creality Silent boards use 0.15, ...

Video guides

Before installing this upgrade kit, remove the entire printhead carriage and save all wired items for reuse later.

If you need instructions to remove the printer, you can use the following "Strip Prusa MK3S" instructions"

På linket nedenfor, finder du en mappe med alt dokumentation for 3D printere, filamenter mv. Den vil løbende blive opdateret

Klik her og gå til dokumentation

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