More info:
http://3digitalcooks.com
http://about.me/luis_rodriguez

Supported by:
http://www.fabshub.com

Please note, this bundle does not include Tools, Extruders or PTFE, for a full 4 tool machine you'll need to purchase those separately, please see links below:  4 x 1.75mm Bowden Tools 80 units x Bowden PTFE Tubing 2 x Standard Titan Extruders with Motor and 1.75mm Bowden Adaptor 2 x Mirrored Titan Extruders with Motor

A short clip showing the new E3D toolchanger having a 'run around' and switching hotends

E3D released their ToolChanger printer design to be open source! Exciting times. I went through the process of assembling the entire printer as a way of studying what they did and why they did certain things while designing a printer based off of it.
I attached the Motion System DXFs because Thingiverse wouldn't allow me to publish otherwise.
The files I have supplied are IGES, STEP, and F3Z files for use in 3D modelling software. Namely Fusion 360 (what I use), or other surface/solid modelling software.

May 12th, 2019
Added some print tests pictures
Upcoming V2 : Toolchanger
Lock-system
E3D (that's the guys who designed the 'original' machine - i think they released it now, or it will be soon) reported that the servo of their beta printers was failing after 60k changes, so they switched to a micro stepper. I will follow their research/work and redesign my toolchanger to use micro-stepper too.
After some tests, i'll use a 24BYJ48S 2-phase mini-stepper, smaller ones need too much gearing, thus tool changing speed is reduced, and when it's 4 changes per layer it's a huge win to go as fast as possible.
Steppers have drawbacks too. At the moment i don't see how to use a stepper without some kind of endstop, and without risks of position loss at power down. It would be nice to do it the software way on the duet :) - servos are absolute positioning systems so i did not have the problem before.
Alternatives for the lock-system :
a 24V electromagnet (abou20mm x 15mm, 28 grams and 2kg hold) : theorically the best solution…