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mwu

gMax Chimera Direct Drive

by mwu Jul 5, 2016
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I love this design and I am thinking about adapting it to my CR-10s. I do have a couple of questions.

1) Are you able to reach the 4 heatbreak set screws on both sides of the Chimera+?
2) I noticed your lower timing belt is twisted in the front. Is there a way to run it straight on the bottom of the 2020 extrusion?

Thanks, I have since given this printer to my brother, but I had few problems with it. I moved to a corexy build that uses a bowden extruder that has been a pain to get tuned to the same quality level as the gMax.

1) Yes, the heatbreak screws should be accessible between the two plates.
2) The belt shouldn't have a twist in it. It's one piece (though not closed loop) and runs from the left side of the top plate, around the motor pulley, along the bottom side of the 2020 extrusion, above the lower plate (still along the bottom of the 2020 extrusion), around an idler, and then connects to the right side of the top plate. The belt attaches to the top of the top plate which lifts it away from the 2020 extrusion. That may give the appearance of a twist.

"Is this compatible with dual e3d titan extruders, nema 17 motors, and the prusa i3, or any of the knock off i3's? Also, what type of mounting hardware does this require, screws, locknuts, washers, etc? Also, would it be difficult for me to add a fan pointed at the bed?"

This was designed specifically for the chimera (using the thing this is listed as a remix of -- http://www.thingiverse.com/thing:852748). It is a direct drive extruder with an x-axis setup, so a pair of Titans would replace parts of this. It is compatible with nema 17 motors, but not the prusa i3 that I know of. The x-axis relies on the spacing / geometry that the gmax printer has. This could probably be modified to work for the prusa i3, but I do not have one. I am sorry, I no longer have the printer I built this on to tell you about the hardware.

E3D Cyclops/Chimera Micro Extruder
by Gyrobot
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