Note: this version is old and out of date. It will require additional work to use with the E3Dv6. Use my modular carriage instead

What this is:

Converts the stock RoBo 3D printer with a single direct feed extruder and replaces it with dual bowden extruder with no loss in x travel. This is just the x-carriage as the cold end will be released separately

Background:

I have designed and fabricated, with the help of tessarect, a dual extruder upgrade to the RoBo 3D printer.

As many RoBo 3D owners make the upgrade to a E3D all metal hot end, it makes sense that instead of going from stock hot end to kraken, many users will want to go stock hot end > single E3D > dual E3D to save cost on parts.

With that in mind this mod is directed at the latter group of people. If you are on the stock robo 3d hot end and want to upgrade to multi-extruders, I HIGHLY recommend not doing this mod but rather wait for me to release the kraken version. The kraken is smaller, lighter weight, easier to adjust, and provides more options later on. This mod is just inteded for people with an existing E3D looking to add a second.

See instructions for BOM and install guide

The entire build documentation can be viewed here: https://cloudup.com/cGGfhsMgMnd

BOM:

Printed:

1x X carriage

1x Fan Shroud

1x Flow Director

1x Fan Holder

2x J-Head Saddle

2x J-Head Mount

Hardware:

4x LM8UU Linear Bearings: http://www.amazon.com/gp/product/B00ED150S4/ref=oh_details_o08_s00_i00?ie=UTF8&psc=1

4x M4 - 25mm Length Screws: http://www.amazon.com/gp/product/B000FN1VB4/ref=oh_details_o05_s01_i00?ie=UTF8&psc=1

4x M4 Lock Nut: http://www.amazon.com/gp/product/B000NBKLKA/ref=oh_details_o09_s01_i00?ie=UTF8&psc=1

4x M4 Nut: http://www.amazon.com/gp/product/B009EGJT3A/ref=oh_details_o07_s03_i02?ie=UTF8&psc=1

4x Compression Spring: http://www.mcmaster.com/#9657k274/=rc2wv5

4x M3-25mm length screw: http://www.amazon.com/gp/product/B000FN7W6W/ref=oh_details_o05_s00_i02?ie=UTF8&psc=1

4x M3 Nut: http://www.amazon.com/Steel-M3-0-5-Threads-Made-Pack/dp/B000NBIH92/ref=pd_sim_indust_1?ie=UTF8&refRID=128RW9M8XQVSPV73G65A

4x M3-16mm length screw: For Part Fan, Use stock robo 3d fan screws or cut M3-25 down

6x Self Tapping Screw for fan shroud: Stock with E3D

1x M3-20mm length screw and lock nut: From stock carriage

Phase 1: Remove the stock x-carriage

Watch the build videos to understand how to remove x-carriage from linear rails. youtube.com/watch?v=CtCjLwwDUj4

Phase 2: Assemble the dual x-carriage

Steps will be outlined here in more detail shortly

Phase 3: Install the x carriage

Steps will be outlined here in more detail shortly

Phase 4: Reinstall x axis and calibrate

Steps will be outlined here in more detail shortly