Prusa Mini REVO - extruder direct drive upgrade to Bondtech LGX Lite/TBG-lite Extruder
 
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Prusa Mini REVO - extruder direct drive upgrade to Bondtech LGX Lite/TBG-lite Extruder  

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PrusaTester2020
(@prusatester2020)
Estimable Member
Prusa Mini REVO - extruder direct drive upgrade to Bondtech LGX Lite/TBG-lite Extruder

Hi!

After I upgraded my Prusa Mini to REVO hotend and because I print mostly PLA I am experiencing problems with under/over-extrusion as mentioned here.

In order to fix them in PrusaSlicer I had to lower the "Retraction length" to 1.8 and set the "Min Print Speed" to 20 mm/s. This makes impossible to slowly print overhangs with “Dynamic overhang speed” set to 5,7,7,10 without under/over-extrusion.

So now I am considering the option to upgrade my Prusa Mini Revo to direct drive extrusion system either Bondtech LGX Lite or Trianglelab TBG-lite Extruder.

The TBG has two options for motors: Moon (more cool and silent one according to user posts) and LDO.

So the options are:

  1. Bondtech LGX Lite with LDO-36STH20-1004AHG motor
  2. TBG-lite Extruder with LDO-36STH20-1004AHG motor
  3. TBG-lite Extruder with MOON CSE14HRA1L410A-01 motor

Q1: If the money are no problem which option is the recommended one? 

 

 

Original Prusa Mini Stepper motor E-axis Extruder current is set to 400mA (M906 T0 E400). The pancake motors options for Trianglelab TBG-lite Extruder are:

  • MOON's 1.8° Motor Nema14 36mm Pancake Dual Drive Extruder Stepping Motor CSE14HRA1L410A-01
    (current must be set to 280mA (M906 T0 E280) according to this instruction)
  • LDO NEMA14 36mm pancake motor LDO-36STH20-1004AHG
    (current must be set to 700mA (M906 T0 E700) rated to 1A according to the spec of the motor) and according to this post.
    Steps set to 880steps/mm.
    Retractation set to 1mm @40mm/s.
    Reintroduction to 1.1mm.

Q2: Except current, steps set and retraction what else should be changed and is it possible after the upgrade to continue using original Prusa Mini firmware?

Este debate ha sido modificado el hace 1 year 2 veces por PrusaTester2020
Respondido : 27/08/2023 1:00 pm
nietofarias
(@nietofarias)
Miembro
RE: Prusa Mini REVO - extruder direct drive upgrade to Bondtech LGX Lite/TBG-lite Extruder

So, did you went for any option for direct drive? How did it turn?

Respondido : 15/06/2024 5:24 pm
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