Hey! This thing is still a Work in Progress. Files, instructions, and other stuff might change!
i3 Magnetic dual hotend mount
by karlzhao314, published
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This is a design for a dual extruder with a simple magnetic coupling, inspired by OpenCircuitDesign's Makergear M2 twin extruder. Essentially, there are 3 parts to it: a middle block to which the belt is affixed and a left and right block that carry the hotends (E3D v6s). The middle block is spaced so that it cannot attach to both the left and right blocks at once, so through some G-code manipulation it's able to detach and reattach to either block without any extra electronics. This allows for each hotend to be manipulated and compensated for separately similar to dual X carriages, which might be able to eliminate ooze and hotend leveling issues.
Visit this link for OpenCircuitDesign's original article and an explanation of the principles behind it:
Project is a work in progress: it's still missing the two parking points on either side of the X rods and no prototype has yet been printed because I'm still awaiting magnets.
Autodesk products export STLs in a strange orientation. Rotate and print as you see fit.
6x 8x10x8mm bronze bushing (LM8UU bearings were too long)
28x 4x2mm round neodymium magnets
M3 bolts and nuts
Assembly: Coming after I make my own prototype
How I Designed This
Inspired by OpenCircuitDesign's magnetic twin extruders for the Makergear M2, designed in Autodesk Fusion 360. Will release design files when the project is complete.
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i3 Magnetic dual hotend mount by karlzhao314 is licensed under the Creative Commons - Attribution - Share Alike license.
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