BMG Extruder Dual Drive Extruder Modification (4800690)
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BMG Extruder Dual Drive Extruder Modification:
A. In some of the dual-drive units, there is some deviation between the gears, in my case, I added a 6.5x3.5x0.5mm printed washer (included in the STL file), a suitable metal washer is fine too.
B. The original release lever was too strong and short, it was very hard to load and unload filament (you needed 2 hands to release the lever), so I add this printed washer collar combination, plus replacement of a new spring, now it's very smooth and easy for the maneuver.
C. Upgrade from the OEM to Dual-drive extruder, you need to adjust the E-Step from the default 93 steps/mm to around 420 steps per mm, in my case with the Eryone ER-20, I made it at 430 steps per mm.
For more info and photos please click the following link:
https://www.thingiverse.com/thing:4800707
Please advise of any errors and omissions.
A. In some of the dual-drive units, there is some deviation between the gears, in my case, I added a 6.5x3.5x0.5mm printed washer (included in the STL file), a suitable metal washer is fine too.
B. The original release lever was too strong and short, it was very hard to load and unload filament (you needed 2 hands to release the lever), so I add this printed washer collar combination, plus replacement of a new spring, now it's very smooth and easy for the maneuver.
C. Upgrade from the OEM to Dual-drive extruder, you need to adjust the E-Step from the default 93 steps/mm to around 420 steps per mm, in my case with the Eryone ER-20, I made it at 430 steps per mm.
For more info and photos please click the following link:
https://www.thingiverse.com/thing:4800707
Please advise of any errors and omissions.
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