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donhuevo's E3D Bowden fed X-Carriage

Discussion in 'Show and Tell' started by donhuevo, May 26, 2014.

  1. donhuevo

    donhuevo Active Member

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    Thanks! The problems I was having were all my fault. I suck at crimping those little tiny female crimp pins. For every 1 successful crimp, I throw 10 away.
     
  2. Galaxius

    Galaxius Well-Known Member

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    @donhuevo. How'd you connect the lead screw to the stepper? Are you going to post a guide? I'm really liking all the upgrades you're doing.
     
  3. donhuevo

    donhuevo Active Member

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    2 people like this.
  4. Peter

    Peter Member

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    how did you figure out the lead nut > x-carriage?
     
  5. donhuevo

    donhuevo Active Member

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    Trial and error. The POM nut has 3 small holes in an equilateral triangle around the flange. I just printed an adapter that had 3 pins on one side and the right size hex on the other. Actually, it was a two part and glue situation because I didn't want to print with support.

    POM to gantry.jpg

    And I had to flip the POM nut over on the shaft. I did lose some build height, but as soon as I figure out how to top mount the motor to the deck instead of mounting it underneath, I'll get about 60mm or so of extra height.
     
  6. Peter

    Peter Member

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    The best solution is often the simplest, nice idea and execution. In fact, as long as the nut isn't a loose fit, three shear pins like this is great will go a long way to reduce slop.
     
  7. Peter

    Peter Member

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    Do those new threaded rods make any awful noise like the stock ones did. My stockers make the most awful noise when the x-carriage is lowering, (yes they are lubricated, still sounds meh)
     
  8. donhuevo

    donhuevo Active Member

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    They aren't nearly as noisy. I can do a video of it homing if you like. As for the slop, I'd put it equal to the slop in the stock setup. I measured the stock nut for my design.
     
  9. donhuevo

    donhuevo Active Member

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    yoda back.jpg yoda front.JPG

    .1mm Yoda printed at 150%. Some issues visible but not bad overall. Weirdness on top of his head.

    Here's a candid of .1 Yoda meeting .2 naked lady...

    yoda and naked lady.JPG

    He thinks to himself, "Talk to her I must. 'Hey Baby' I must say."
     
    4 people like this.
  10. Peter

    Peter Member

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    nice work. These motor/screws look the goods.
    I'm still umming and ahhing about the 8x2mm 350mm ballscrews i found... 90$ a pop though, no motors
     
  11. donhuevo

    donhuevo Active Member

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    Yeah, I saw that link you posted. Very pretty but they will require couplers. I think Paul Yeh posted some solid couplers he had made.
     
  12. donhuevo

    donhuevo Active Member

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    I did a quick homing video so you can hear the motors...

     
  13. Peter

    Peter Member

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    very quiet.

    Not that noise was really that big a problem and my wife loves 3d printing, but everytime the z axis 'homes' in this house, she looks at me like 'whats wrong with it?'...
     
  14. Mike Kelly

    Mike Kelly Volunteer

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    Time to lube the rods
     
  15. donhuevo

    donhuevo Active Member

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    Is there a delrin nut out there for the stock rods? That could be something worth looking into...
     
  16. Mike Kelly

    Mike Kelly Volunteer

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    most R1's these days use a rod coupler nut.
     
  17. donhuevo

    donhuevo Active Member

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  18. Mike Kelly

    Mike Kelly Volunteer

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    Oh gotcha, just needs to be 5/16-18" for stock rods and no greater than 13mm (like half inch) between the flats.
     
  19. donhuevo

    donhuevo Active Member

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  20. Mike Kelly

    Mike Kelly Volunteer

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    That link didn't really work. I don't think McMaster sells plastic coupling nuts
     

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