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Discussion in '3D printers' started by Carl Feniak, Sep 29, 2014.

  1. Elmo Clarity

    Elmo Clarity Journeyman
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    Was thinking if you were in Alaska or Hawaii it may have been more expensive priority. But it shouldn't be any greater cost to Florida.

    Give them an email or call. They have been really friendly and helpful for me. When I had my hotend fail on New Year, I drove to the store and picked up the new one and they were great to work with.
     
  2. Carl Feniak

    Carl Feniak Journeyman
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    Hehe, this board have enough drivers? http://www.panucatt.com/Azteeg_X3_Pro_p/ax3pro.htm
    Fair enough, if you have higher amp draw motor than typical. The trim pot does allow you adjust the current though so for typical motors you aren't sending full current or your motor gets really hot (I've experienced this, enough to soften PLA). Less current will reduce the holding torque, but a low pitch lead screw has lots of mechanical advantage and doesn't need lots of torque.
    Here is a comparison of the 4988 and 8255 for interest sake. Their comparisons at the bottom show the motors drawing only 0.8A each (1 A for extruder) and theoretical capacity of 2.0 amps and 2.5 amps respectively.
     
  3. Elmo Clarity

    Elmo Clarity Journeyman
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    Still not enough! I WANT EVEN MORE STEPPERS! ;)

    I have the current turned down to 1.2A on my Z motors. But even then, that is a total of 2.4A. I might be able to get away with that for a while with plenty of cooling. The extruder motors will require less current, but can't run them together. I picked up some extra drivers for my ramps board so have some spares I can try wiring in.
     
  4. hax0red

    hax0red New
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    I'm not sure how steppers work but with a brushless motor they pull much more current when under load so by running two stepper motors on Z they might be sharing the load reducing the current draw although it's probably not as efficient as one stepper.

    Carl, did you ever try running one stepper on Z? I might try just one at first.
     
  5. Elmo Clarity

    Elmo Clarity Journeyman
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    They work a lot different than a regular brushless DC motor. But they do draw more current under load. Unlike a brushless motor, which draws no power when stopped, a stepper still does which is how it can hold its position. The more torque it needs to over come the force trying to turn it, the more current is required.

    I had thought about the single motor Z axis too. Maybe even something like adam has done but with only 2 screws instead of 3.
     
  6. Carl Feniak

    Carl Feniak Journeyman
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    One driver or one motor w (1/2/3 leadscrews)?
    Both my printers use one driver and two motors. Not sure how I'd approach it if I went with 3 leadscrews.
     
  7. Elmo Clarity

    Elmo Clarity Journeyman
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    One driver/motor with 2 lead screws.
     
  8. hax0red

    hax0red New
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    1 stepper with 1 or even 2 lead screws but really I'm curious about 1 stepper with 1 lead screw. If I end up using belts I would probably take the route that Adam did and use 3 leadscrews with 1 possibly larger stepper. To start with I plan to stay with the stock configuration to give default configuration a try.
     
  9. bhalkett

    bhalkett New
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    I've got the "stock" configuration going (2 steppers/2 leadscrews)--though I'm using 20X60mmm extrusions and a 12" X 12" bed. I've very happy with it so far. I did start off of a Ramps 1.4 board but I've now switched over to a Smoothieboard 5x. I've got my Z stepper set to 2A. Other than having to use some active cooling on the board it's allowing working very good!

     
  10. Elmo Clarity

    Elmo Clarity Journeyman
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    Are you running both motors off one driver for Z or using a slave driver? What motors are you using?
     
  11. Carl Feniak

    Carl Feniak Journeyman
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    I think the 1 motor 1 screw would work with a smaller 8x8 bed and 20x60 rear bar to prevent left/right tilting, perhaps a larger bed with a 20x80 rear bar? You never know unless you try it. The open beam frame would makes it very easy to change setups if you don't like it. I wouldn't try it with the original 20x40 setup though as the increase wheel spacing is good for left right balancing torque forces.
    Others do this type of setup with smooth rod/linear bearings on each side of a single centered lead screw (Makerbot/Ultimaker).
     
  12. bhalkett

    bhalkett New
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    Both are running off of one driver. The motors came from flea bay...it's supposed to be a Kysan 1040095.

     
  13. Elmo Clarity

    Elmo Clarity Journeyman
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    The Kysan 1040095 is rated at 1.5A so that combination could pull up to 3A. If you are using the standard driver chips for Ramps, you could be over loading them unless you are supplying less than 1A to each of them. Even at 2A, you are going to need some real good cooling. Heat sinks and fans.
     
  14. Elmo Clarity

    Elmo Clarity Journeyman
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    Ruggb, what did you use to design those brackets? I was thinking of trying to mod them a little. I found this...

    http://www.thingiverse.com/thing:268615

    And was thinking it would be nice to merge the two together. I could do something with OpenSCAD to build up the inside area to support the rod for the foot. Maybe reduce it down from the 5/16" threaded rod to an M5 bolt instead.
     
  15. hax0red

    hax0red New
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    Still waiting on the hot end from matterhackers. The tracking hasn't changed and the email back from them basically said they are updating their shipping methods due to costs of their offering free shipping. Would really have been nice if I could have paid a few extra bucks to ensure it shipped priority with real time tracking.

    I also picked up a set of Makerbot style end stops but from what I've read the pull up resistor on the Azteeg X5 and Smoothieboard cause some sort of problem(I have little experience with electrical engineering).

    Has anyone found a work around for the Azteeg X5 or Smoothieboard? I found in this thread: https://groups.google.com/forum/#!topic/smoothieware-support/I9_Sl7SaCxg that they were able to use the LED pins for the display to circumvent the resistors on the endstops. My problem is I haven't found the Azteeg X5 equivelent to the Smoothieboard pinout page: http://smoothieware.org/lpc1769-pin-usage
     
  16. Carl Feniak

    Carl Feniak Journeyman
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    If you wire using pins 3 & 4 will this not work like a normal switch? You could of course just buy a normal switch, but to make these compatible would that do the trick?
    Doesn't give the LED or debounce features, but maybe the smoothie board has debounce capabilities in it's software?
    Edit, you would have to remove the capacitor.
     

    Attached Files:

  17. Elmo Clarity

    Elmo Clarity Journeyman
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    I have modified Ruggb's corner bracket combining it with a leveling foot. I used a M5 x 20mm screw and 3 M5 nuts to put it together.

    [​IMG]

    To assemble, insert the screw through the top of the hole in the bracket and thread the nut on it. Tighten the nut until it is aligned with the cutout on the bottom.

    [​IMG]

    Tighten the screw, holding the nut in place so it is pulled into the plastic.

    [​IMG]

    Keep tightening until it is fully set. Then remove the screw.

    [​IMG]

    Repeat this process on the foot. This time, leave the screw in the foot. Install the 3rd M5 nut to the screw (not pictured).

    [​IMG]

    Install the bracket as normal. There is a new wall and 3 screw holes to bolt the bracket to the inside of the extrusion. The bolts are optional, but it should give some extra strength. (With 23 bolts per corner, it should stand up to anything).

    [​IMG]

    Once all the brackets are installed, you can level the printer by turning the foot. Once it is level, tighten the free nut on the screw against the one in the bracket to lock it in position.

    Let me know if you have any problems with it. I printed it using eSun's PET-G Blue at 50% infill with 5 shells on top/bottom/sides @ 255c. Yeah. Bit of overkill. :)

    See below for the updated STL file.
     
    #617 Elmo Clarity, May 4, 2015
    Last edited: May 5, 2015
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  18. hax0red

    hax0red New
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    Hey Carl, thanks I will try removing it. I wonder if I could just bridge over the top of it? seems like it'd be easier as it's extremely small SMT components on the endstops.

    Smoothie can be configured via software with debounce but I'm not sure about any electronic debounce designed into the PCB.

    endstop_debounce_count100Debounce each endstop pin over this number of values. Set to 100 if your endstops are too noisy and give false readings.
     
  19. Elmo Clarity

    Elmo Clarity Journeyman
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    Update to the Corner Bracket file. Made the pocket for the screw head in the foot a little deeper.
     

    Attached Files:

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  20. hax0red

    hax0red New
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    #620 hax0red, May 5, 2015
    Last edited: May 5, 2015
  21. Elmo Clarity

    Elmo Clarity Journeyman
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    Sorry to hear of the troubles you had to go through. That is completely opposite of my past experience. Hopefully it is not the start of a trend for them. Might have to put an order in through them soon and see what service I get this time.
     
  22. hax0red

    hax0red New
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    Not your fault. I actually ended up getting a $15 credit for the shipping and $20 credit for the missing fan, plus they are sending a fan second day UPS. In the end after not being real happy with their service they did redeem themselves and were very nice about the whole situation so I'll have to give them another shot. From what they said it's growing pains which I can understand.
     
  23. Elmo Clarity

    Elmo Clarity Journeyman
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    Glad it all worked out. Sounds like they did go above and beyond to make sure you were satisfied. They are a small company. Probably no more than a dozen or so people when I visited them in January.
     
  24. Elmo Clarity

    Elmo Clarity Journeyman
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    I'm at the point where I am looking at installing the endstops on the printer. There hasn't been a lot of pictures showing how they fit on and where, and I haven't noticedany pictures of how the V2 Z Endstop is suppose to go. If you have your endstops installed, would you be willing to share pictures of them? If you have made new styles, would love to check out the STL files too.
     
  25. Carl Feniak

    Carl Feniak Journeyman
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    I posted photos of the V2 Z endstop option in the forum when I first switched to it, there are a lot of discussion pages so it would be hard to find them. Here's some new ones:
    IMG_1175.JPG IMG_1174.JPG
     
  26. Elmo Clarity

    Elmo Clarity Journeyman
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    I used the forum's search function for the word endstop and didn't come up with much. Thanks for the pictures. Clears up things in my screwy mind a lot.
     
  27. Elmo Clarity

    Elmo Clarity Journeyman
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    I hate asking, feeling like a pest, but could you post photos of how the X and Y endstops are suppose to attach?
     
  28. hax0red

    hax0red New
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    Mounted the E3D Lite6 to my Mini Kossel and used a blower fan for now to help with heat creep. Printed a few PLA parts and I'm seriously considering never going back to a J-head :thumbsup:. Still figuring out the best settings but even with a 0.4mm nozzle I was able to get some of the best layer alignment I've ever had with a smooth surface texture at 0.08mm. With the 0.25mm nozzle the corners are insanely sharp but still prints well with no clogs yet. I have to do some more testing but for the money the Lite6 cannot be beat.

    I'll never mess with the clones again but it does make me wonder about the E3D V6 vs E3D Lite6. I'm almost inclined to think the E3D Lite6 may offer better print quality due to the low friction tube and added heat protection from creep helping create an ideal transition zone at the end of the heat break.

    [​IMG]
    [​IMG] [​IMG]

    First frog printed with Hatchbox PLA. The white specks all over are dust, this thing is pretty much flawless in person. I'm gonna order a macro lens tonight from Amazon, hopefully my C-Bot will be calibrated with two Lite6's by next week.
     
    #628 hax0red, May 6, 2015
    Last edited: May 6, 2015
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  29. Carl Feniak

    Carl Feniak Journeyman
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    X axis from the side. XY bar end carriage triggers on contact.
    IMG_1176.JPG

    Y axis from top then bottom rear. Contacted by hotend carriage after homing X. Bend put in switch levers tip so that it doesn't catch when homing while already in the home position.
    IMG_1177.JPG IMG_1178.JPG
     
  30. Carl Feniak

    Carl Feniak Journeyman
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    First part makes sense, but not sure what you mean by added heat creep protection. Would the thicker, but more durable and easily machined transition piece not transmit more heat up?
    Do you use any retraction or lift on your delta? Very nice prints!
     

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