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Leon's Printer

Discussion in 'Show and Tell' started by Leon Grossman, Nov 11, 2013.

  1. Das Wookie

    Das Wookie Active Member

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    Awesome! Looks like I know what my next parts are that I'll be printing. :)
     
  2. Das Wookie

    Das Wookie Active Member

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    All parts are printed for the changover to the rails. Need to cut the rods to length and finish the print for the E3D hotend as well... Should be swapped over later this afternoon.
     
  3. Leon Grossman

    Leon Grossman Active Member

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    I just mounted my Pico hot end with the redesigned carriage. The Pico is significantly shorter than the E3D. Either way, if the Pico doesn't work out, my hot end is now connectorized and it'll be <1hr to swap back to the E3D on the new carriage.

    A few things of note with the new carriage:
    • I removed the press fit and switched to zip tie mounting. This solved a ton of problems with bearing alignment. It also allows for easy replacement of the carriage without disassembling the whole printer.
    • I removed the built in cooling fan mount but added m3 mounting holes to the front side. This will allow me to create custom ducts depending on whether I'm using the E3D or Pico.
    • I added a Pico cooling fan mount integrated into the back side of the carriage. I'm particularly proud of this.
    I probably won't get to do any testing until Sunday but we'll see what I can do before then.
    2014-05-08 21.08.59.jpg
     
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  4. Mike Kelly

    Mike Kelly Volunteer

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    Nice and simple. I dig it.
     
  5. scotta

    scotta Active Member

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    How do you find the direct extruder vs the wade design? Any pros and cons of each. Does it use the same nema sized moter.
     
  6. Leon Grossman

    Leon Grossman Active Member

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    I'm quite in love with the direct extruder. The con is that the lack of a geared design means that you don't have quite as much torque. This means that very high speeds may not be achievable without increasing the motor size. Increasing the motor size means more mass. More mass means slower speeds.

    That said, I print at 60mm/s all day with no problems and I've printed at 80 with no problems. This printer isn't going to get much higher with all the mass it's carrying around so the torque issue is not really that big of a deal.

    The upsides are pretty huge. The filament load is a spring clip that you push in and feed the filament through. Everything is lined up so that it just feeds in, no fishing to get the filament started.

    Basically, the big improvement is just how simple and easy it is to operate. I've printed hundreds of hours with this cold end design and I wouldn't go back to the geared extruder without a very, very compelling reason!
     
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  7. scotta

    scotta Active Member

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    Did you buy a new motor or just use the one from the stock robo?
     
  8. Leon Grossman

    Leon Grossman Active Member

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    Just the stock robo motor.
     
  9. Galaxius

    Galaxius Well-Known Member

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    Leon, did you have to change any feed settings/values when changing to direct extrusion? I've read that a value change has to be made for the hobbed diameter of the hobbed bolt for the geared extruder if the bolt is replaced and the hobbed diameter is different.
     
  10. Leon Grossman

    Leon Grossman Active Member

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    If you take a look at my thingiverse thing, it lists the new extruder pulses per mm. I think it's 92.6.
     
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  11. fabrice

    fabrice New Member

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    Bonjour,je suis fran├žais ne parle pas anglais.La pico est elle mieux que htend V5?

    Cordialement
     
  12. Leon Grossman

    Leon Grossman Active Member

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    Hats for printers v2.

    PrinterHat.JPG
     
  13. warlocke

    warlocke Active Member

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    Johnny: "And Leon is getting laaaaarrrrrger."
    ;)
     
  14. Leon Grossman

    Leon Grossman Active Member

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    Here was my first print. The top failed due to jamming in the hot end. But, otherwise, this is an octopus at 0.2mm layer height with nothing more than reassembling my Y axis upgrade, setting the Z height and pressing Go.

    Unfinished Octopus.JPG
     
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  15. Harry

    Harry Team ROBO 3D
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    Hey Leon, is your VIKI fully working?
    - Harry
     
  16. Leon Grossman

    Leon Grossman Active Member

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    Harry,

    Yes it is. However, I switched to Repetier firmware because the Marlin LCD support (specifically VIKI) was lacking.
     
  17. Leon Grossman

    Leon Grossman Active Member

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    Ball.JPG My latest print. 31 hours. 0.2 layer height.
     
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  18. sammie

    sammie Member

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    That looks awesome!
     

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