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Chimera on a Taz 4

Hey There: I have a Lulzbot Taz 4. I purchased the E3D Chimera extruder, as well as two Witbot MK8 extruder kits from Amazon.

The Chimera hot ends are heating up fine. However, when I try to have them extrude some filament, one of the MK8 extruders chatters and does not feed the filament through.

I'm wondering if i need to add a stepper motor to the mix? If so, can I used the stepper motors from my Taz 4 dual extruder head?

Answer this question I have this problem too

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Hi William,

The MK8 extruders are ungeared so they may not be able to output the torque required to overcome the back pressure of our nozzles.

The recommended extruder for the Chimera+ is the titan extruder ( with a compact but powerful motor (

Other than that you may be able to increase the torque output of the MK8 extruder by usign a geared stepper motor such as this one:

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William Heldman will be eternally grateful.
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