COMPLETE Modular Mirrored Titan

Discussion in 'Guides, Mods, and Upgrades' started by Ephemeris, Jan 5, 2019.

  1. Ephemeris

    Ephemeris Well-Known Member

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    AssembledIMG_3353.jpg
    I finished this design several months ago but never got around to posting the results. Having used Chase Wichert's brilliant Dual Titan carriage for a couple years I felt I could see how to improve it slightly. My goals were pretty simple:
    • Capable of accessing the entire 300x200 build area with both nozzles
    • Modular carriage and extruders. Everything connectorized and easy to take apart
    • Better cooling than the original Dual Titan carriage. This drove me to use a Titan and a Mirrored Titan
    • Easier belt installation, tensioning, and removal without damaging the belts
    • Improved wire routing
    Assembled IMG_3344.jpg

    The picture above shows how the fan wires disappear into the X-carriage. All X-Carriage utility wiring (end stop switch, part cooling fan, and infrared Z-sensor) is routed through internal conduits in the printed carriage. They exit through the top center of the carriage and terminate in a connectorized central yoke or tower.

    The next photo with the extruder sleds removed show the fan wires disappearing and reappearing at the yoke.

    Internal Cabling  IMG_3177 2.jpg

    Looking at it from the left side you can see the limit switch wiring going into the internal conduit.

    Internal Cabling IMG_2675.jpg

    From the back you can see the Z-sensor cabling going into another internal cable path.

    Internal Cabling IMG_2696.jpg

    The extruder sleds are very similar to Chase' original but with Molex Microfit 3.0 connectors and of course the left and right are mirror images.

    Sled IMG_3186 2.jpg

    Sled IMG_3187.jpg

    One thing I'm particularly proud of is the X-belt tensioner. It uses a sort of screw driven rack that can capture the end of the belts and drag it to tension the system.

    Tensioner IMG_3178 2.jpg

    The tricky part is the tiny printed part that grabs the belt. It's shown below on top of USA penny to show scale.

    Tensioner IMG_2622.jpg
    The X-motor mount and X-idler (Y-carriages) were both redesigned to maximize clearances so the entire 300 mm wide build area was available to both extruders.

    Y-Carriage IMG_3326.jpg

    So that's my version of the dual direct BigBox carriages.

    Assembled IMG_3342.jpg
     
    #1 Ephemeris, Jan 5, 2019
    Last edited: Jan 6, 2019
    Mike Kelly, crosley, potti5 and 4 others like this.
  2. mhe

    mhe Well-Known Member

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    Amazing work! Do you have some downloadable files for that? A friend is currently considering a Titan upgrade for his dual and this would be perfect for him as an IDEX setup seems to be too intimidating for him.
     
  3. Ephemeris

    Ephemeris Well-Known Member

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    If you think it will help him, I'll be happy to package up all the files. I'll need to make a custom bill-of-materials so he can see exactly what parts are needed. Once I get that done I can DropBox it.
     
  4. mhe

    mhe Well-Known Member

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    That would be appreciated, I can't guarantee he would actually go ahead and build it, so there is a chance you'd do it for nothing in that case and I don't want to burden you with unnecessary tasks, but publishing the files would probably be a thing, generally speaking?
     
  5. W1EBR.Gene

    W1EBR.Gene Well-Known Member

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    I really like how well packaged it is! Elegant!
     
  6. Mike Kelly

    Mike Kelly Volunteer

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    I like this a whole bunch. Great work. I'm looking for ways to update my KS bigbox to some better extruders and this looks pretty perfect. Kudos.

    My only nitpick is my concern with using the connectors for strain relieving the cable. While you'll be fine with the heatshrink, for contacts such as those, 'No Movement is good movement'. I'd extend the wire bracket up to grab the connector on the other side with a zip tie or quick release clamp to eliminate any motion in the connector.

    Looking forward to seeing the files
     
  7. Ephemeris

    Ephemeris Well-Known Member

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    That's a very good idea. I'll give it some thought.

    I am almost done with the BOM. Once I get that done I'll zip up the files for the whole XY system.
     
  8. Ephemeris

    Ephemeris Well-Known Member

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    Here's a zip file with the STL files, some photos, some notes, and a rough bill-of-materials (BOM)

    EphBox Mirrored Titan Files

    I won't be shocked if you have questions :)
     
    Mike Kelly and mhe like this.

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