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Leon's Printer

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

  1. Mike Kelly

    Mike Kelly Volunteer

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    http://www.thingiverse.com/thing:8757 this one I meant. Something where it exits the normal build area. Or printing multiple objects.
     
  2. Leon Grossman

    Leon Grossman Active Member

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    Hopefully. I can try that tomorrow.
     
  3. Leon Grossman

    Leon Grossman Active Member

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    Mike asked me to print the pyramid. I didn't take any anti warp precautions so the corners peeled up but you can see that I have zero stringing and pretty good print quality for reasonably high speed print. (80mm/sec but rate limited by 15sec cooling delay).

    2013-11-29 11.31.58.jpg

    I haven't done anything special here.
    • I'm using crappy Octave filament
    • I've got my speeds all cranked to 80mm/sec
    • I haven't changed retraction/accel/decel/etc from default
    • 220C extruder, 100C bed
    It might be the EZStruder/E3D combination helping prevent the stringing but I don't recall having significant stringing even with the stock extruder, hot end combo.
     
  4. Mike Kelly

    Mike Kelly Volunteer

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    Good looking print man. I guess I'll see if my E3D is the ticket or if I need to jump on the EZStruder as well.

    Thanks for trying that.
     
  5. Mike Kelly

    Mike Kelly Volunteer

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    How many bearing does the ezstruder holder require? It seems like it needs 2 per side for a total of 4?
     
  6. Leon Grossman

    Leon Grossman Active Member

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    Yes, four. Just like the standard carriage.
     
  7. Leon Grossman

    Leon Grossman Active Member

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    My smooth rod replacement, first pass:

    I haven't mounted to the printer yet but this is about as little height as I can consume. I'm going to try leveling with washers instead of springs and then I'll only lose 2 or 3 mm of height instead of 1/2".

    (Ignore the warping, I used hairspray instead of ABS juice and that caused a small amount of noncritical distortion.

    2013-12-19 10.28.52.jpg
     
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  8. Mike Kelly

    Mike Kelly Volunteer

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    Looks nice man how hard was it to get the bearings in there?
     
  9. Leon Grossman

    Leon Grossman Active Member

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    Not too bad. The top wall is so thin that it separates when I put the beatings in. I was able to press fit them by hand with moderate force.
     
  10. Leon Grossman

    Leon Grossman Active Member

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    Good news/Bad news.

    Bad
    • I flubbed the cut on the smooth rods by forgetting to account for my offset
    • The home switch needs to be relocated
    • You have to tape the bed wires out of the way
    Good
    • If I do a higher quality print of the end pieces, I think I can get away without leveling springs.
    • You don't lose any of the heated Y length
    • The bed has dramatically better stability
    2013-12-20 18.24.29 HDR.jpg
     
  11. Leon Grossman

    Leon Grossman Active Member

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    I added a little extra clearance mass to the bearing blocks for improved stability. Reprinted and did a test fit. The bed is within 0.07mm of level between the four corners. I'm not sure whether to go with the spring leveling mechanism or not. My expectation is that the bed is probably not that level so the springs can line up the corners but the bed still won't be completely flat.

    The next two tasks are:
    1. create spacers for the belt mount
    2. create a way to trigger the endstop.

    Hopefully, I can get all of this done by EOD tomorrow and then publish my results.
     
  12. Leon Grossman

    Leon Grossman Active Member

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    I just published the smooth rod retrofit to Thingiverse here:
    http://www.thingiverse.com/thing:211965

    If you don't need to use a spring based leveling method, you only lose 3mm of height and none of the usable bed area!
     
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  13. Leon Grossman

    Leon Grossman Active Member

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    FWIW, my VIKI pinout


    CS Chip Select 53 Red
    DI MOSI 51 Blue
    CD Card Detect 49 Yellow
    BTN Reset Button 44 Black
    CLk SCK 52 Green
    D0 MISO 50 White

    +5 + Red
    SDA 20 Blue
    ENCB 42 Yellow
    GND - Black
    SCL 21 Green
    ENCA 40 White
     
  14. Leon Grossman

    Leon Grossman Active Member

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  15. scotta

    scotta Active Member

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    Leon, how level is your glass bed. Mine is proud in the centre by about 0.4 mm
     
  16. Leon Grossman

    Leon Grossman Active Member

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    Mine is under 0.1mm in flatness.
     
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  17. Leon Grossman

    Leon Grossman Active Member

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    Hats for printers... Yes, a humidifier box and a little packing tape eliminated most of my warp problems.

    R365 D364 and 365-07.jpg
     
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  18. Bob64

    Bob64 Member

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    Nice Guitar D-Pad.
     
  19. Das Wookie

    Das Wookie Active Member

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    Leon what size rod and bearings are you using? LM8UU and 8mm rod?
     
  20. Leon Grossman

    Leon Grossman Active Member

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    Yes.
     

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