COMPLETE BigBox 1.1

Discussion in 'Guides, Mods, and Upgrades' started by Greg Holloway, Apr 8, 2016.

  1. Alex9779

    Alex9779 Moderator
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    Hmmm I see no difference in using a bowden adaptor or just a tight hole where the tube runs through just like it does now on the lower part...
     
  2. fpex

    fpex Well-Known Member

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    This si true. It will leave a longer PFTE tube also. Otherwise we should lookout bringing the hot ends higher. I have all pieces for a titan change now, and I will have a look as well.
     
    #262 fpex, Apr 19, 2016
    Last edited: Apr 19, 2016
  3. Alex9779

    Alex9779 Moderator
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    Bringing the hotends higher is limited by the travel range of the Z axis...
    But sure, if there is room why not...
    I really see not much difference in an extended straight guided bowden tube from the Titan to the hotend of about 10mm, I have to measure how much is needed to get the gear outa range of the case. Sure the tube should be as short as possible because the filament is not completely tight in the tube, could not be anyways, it has to move, and that little play allow the filament to move slightly to the sides when pushed into the hotend. This results in a decreased length at the end of the tube so your extrusion can be different. And the longer the tube the more of that little play adds to the missing length at the end...
     
  4. fpex

    fpex Well-Known Member

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    I am looking at the same, since I am now building the titan hybrid.
     
  5. JesperJuul

    JesperJuul Well-Known Member

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    Why you little!!!:mad:

    I bought the 18ncm one before you answered. Shame on you! :D
     

    Attached Files:

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  6. fpex

    fpex Well-Known Member

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    How di you cable the bowden motor? I mean from where get it the cable pass?
     
  7. PsyVision

    PsyVision Moderator
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    I passed the motor wire up the back spine and then through the small circular hole between the two upper motor mounts.
     
  8. fpex

    fpex Well-Known Member

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    Thanks. I am now also adding a spacer element between the titan and the bottom carriage to raise the extruder.
    Anybody else here having problem attaching the sensor box? The original design seems to large.
     
  9. Alex9779

    Alex9779 Moderator
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    That's a nice idea, just model the shape of the buttom surface of the top part and make a part of it, then the whole top part comes up a bit, just need two longer M4 screw, no problem, and the longer bowden tube...
    Did you figure out you how much we have to lift it?
     
  10. Alex9779

    Alex9779 Moderator
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    But I think I am just going to move the lower surfce by the amount and just print the whole part...
     
  11. Alex9779

    Alex9779 Moderator
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    What I see is that I have to lift the whole Titan and motor by 7mm...

    current:
    TITAN EXTRUDER BRACKET mod_3.PNG
    modded:
    TITAN EXTRUDER BRACKET mod_4.PNG
     
  12. mike01hu

    mike01hu Well-Known Member

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    @Greg Holloway what are the cut-out dimensions i.e. length, depth and offset from rear, as I will do this before assembly.
     
  13. fpex

    fpex Well-Known Member

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    I am making it 10mm with some margin and printing in nylon to use it also as a dampener like for the bowden one.

    UPDATE: I have decided tor design the mount to reuse the existing screws. Let's see how it ends up.
     
    #273 fpex, Apr 20, 2016
    Last edited: Apr 20, 2016
  14. Alex9779

    Alex9779 Moderator
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    This way I save some material and weight:
    TITAN EXTRUDER BRACKET mod_5.PNG
    And I don't need different screws...
     
  15. fpex

    fpex Well-Known Member

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    I did exactly the same :)
     
  16. Alex9779

    Alex9779 Moderator
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    I made a short weight comparison, I slice at 0.2mm, 0.4 nozzle, 3 outlines, 25% infill:
    original: 35g
    my mod for velcro strips and lower cable bracket shortened: 33g
    lifting the whole bottom surface: 46g
    lifting only Titan: 38g

    So I have 3g more to move than if using the original design...
    No dealing with cutting Perspex, no searching for some who can do it. No risk that it may look ugly without being able to get a replacement part at the moment...

    If someone else wants it, I can do the mod for normal zip ties too then it will be approximately puls 5g compared to original, but I can recommend the shorted lower cable bracket. That way the left hotend cabling goes straight down touching the lower part and no edge...
     
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  17. fpex

    fpex Well-Known Member

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    I am also changing the back bracket because the current 1.1 is a pain honestly
     
  18. Alex9779

    Alex9779 Moderator
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    So you didn't contact E3D to return your order? :p
    That's the great thing of OpenSource. There are endless possibilities to mod...
     
  19. Alex9779

    Alex9779 Moderator
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    And it is on the machine:
    bigbox.alitecs.local_snapshot.jpg
     
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  20. Miasmictruth

    Miasmictruth Well-Known Member

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    Alex do you have to have a differnt stepper or will the old ones work? I ordered mine state side and didn't realize the steppers were differnt.

    I have also been away from home so I haven't been able to get my Titans ready, just want to know if I have to order them.
     

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