Jim's Flying Motor Mount Dual Extruder
Description
Instructions
The files jimsFMM45Dual.scad and jimsFMM45DualGears.scad are the design files. Commenting in the files will explain how to visualize the construction and print the pieces.
The files configuration.scad, metric.scad, and functions.scad are direct copies of the Josef Prusa files of the same names and are provided for convenience.
The file parametric_involute_gear_v5jkl.scad is a slightly modified version of Greg Frost's excellent parametric gear file. I want to fully acknowledge the great work of Greg Frost in creating this file. The gear designs in it made my extruder design possible. Many thanks, Greg! The few changes I've made are in the comments in the file. Place this file in a file folder named “inc”. Note that one of the changes I made causes the gears to render correctly even using “F5” in OpenSCAD. Be warned that this rendering takes minutes, not seconds!
Instructions for building Jim's Flying Motor Mount Dual Extruder are in an Instructable that I am releasing at the same time as I release this Thing. I'll edit this to add the link. Please refer to the Instructable for complete, step-by-step instructions, with lots of pictures.
instructables.com/id/Build-a-Dual-Extruder-for-3D-Printing/
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This is a really interesting design. I was really hoping to go dual direct drive but it is really hard to make it compact as you have done. Good work.. could we see some test prints with this if you have this installed already?
Yes, keeping the design dual, compact and accessible - all at the same time - is not easy!
While I have extruded plastic with both extruders, I have not mounted it on a carriage so I can print with it. I need to design a new X carriage for my printer so I can do that. I hope to do that very soon.
Way to use bevel gears at funny angles! We need more of that on Thingiverse. Also, it looks like your main motor mount piece would print just fine vertically, without all that wacky support. Is there a reason you put it on its side?
Glad you like the gearing. It was what made the extruder possible - I had to get the motors out of the way of the filament, the tensioners, and each other.
The motors started out at a 30 degree angle which was too shallow to print vertically. Also, the printing technology I had available was having trouble even at 45 degrees (it's since matured remarkably), hence the support material. But your suggestion is a good one, and timely. I will try printing vertically next time I print this.
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witch printer did you use for the body? And can you make a mount for a printrbot wood extruder?
I used a modified Wallace design to print it, but any printer should work. Nothing special.
I'm not familiar with the wood extruder. Adapting the design to another extruder should not be difficult unless the new extruder body is a lot larger than the Ubis extruder. Then the spacing would have to change and a lot of details would need to be modified. But the design is open sourced, so go for it.