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

  1. adamcooks

    adamcooks Well-Known
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    Here's my mount, also z end stop. 1429509616760-121588520.jpg
     
  2. sheffdog

    sheffdog New
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    Adam thanks so much, could you post your STL for the bed mount?
     
  3. sheffdog

    sheffdog New
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    Looking great gwandad, let me know if your Z motor mounts fit perfectly to your stepper motors. I'm using the openbuilds stepper motors and the holes did not line up exactly, I had to bore them out a little bit.
     
  4. adamcooks

    adamcooks Well-Known
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    They are all over on the triple c thread.
     
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  5. sheffdog

    sheffdog New
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    Here is a first pass Chimera/Cyclops mount, I should get my chimera hot end tomorrow so I can check for fit then. See Attached STL and Renders
     

    Attached Files:

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  6. gwandad

    gwandad Well-Known
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    Carl, If you are wondering what the strange glow in the south-west is, it is my red face. I hadn't looked in the drawings! I assumed it would be the same as the file of stls. My apologies, Mate, can we put it down to age induced stupidity?
     
  7. Elmo Clarity

    Elmo Clarity Journeyman
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    So your bed consists of just the heater and glass on top of it?
     
  8. Carl Feniak

    Carl Feniak Journeyman
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    PCB heater, glass, then simple bulldog clamps. Hair spray for PLA, kapton tape for ABS.
     

    Attached Files:

    #518 Carl Feniak, Apr 20, 2015
    Last edited: Apr 20, 2015
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  9. Carl Feniak

    Carl Feniak Journeyman
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    Looks good, you may want to print that out of ABS instead of PLA due to the proximity of the heater blocks to the carriage plate. On that plus side that proximity will give you some extra Z height over my mounting. You may want to increase access to the push fit couplings though as you might find it frustrating to release the tube with the structure around them.
     
  10. sheffdog

    sheffdog New
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    I'll take another pass on it, thanks for the feedback on the couplings Carl
     
  11. adamcooks

    adamcooks Well-Known
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    I was thinking that heater block was pretty close to the plastic.


    Also, I have stopped using the binder clips, I sit the glass on gino pad, a silicone thermal transfer mat.
     
  12. Elmo Clarity

    Elmo Clarity Journeyman
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    While we are on the topic of heated beds, I was wondering if anyone who has done an 8x12 bed could share a link to the heater they used?
     
  13. adamcooks

    adamcooks Well-Known
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    these are the guys who made mine. they have a 8.4 x 12.6 http://3dheatbeds.com/
     
  14. Carl Feniak

    Carl Feniak Journeyman
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  15. Elmo Clarity

    Elmo Clarity Journeyman
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    That was the one I had been looking at. Wasn't sure about the extra size if it would fit properly.
     
  16. adamcooks

    adamcooks Well-Known
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    You may not be able to print to the entire surface, but it will fit.

    On a side note.

    http://www.mosaicmanufacturing.com/blog-1/2015/hardware-heaven

    Going to be launched on kick starter tomorrow. I am really excited about this. There has been a ton of testing behind this and it is a quality product with real impact potential for the community. You can read about it here.
     
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  17. adamcooks

    adamcooks Well-Known
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    I use the .5 mil sheets, cut into 1" square, checkerboard. That's a link on my BOM, Amazon prime ftw!

    The early birds blew out on that kick starter. 15 minutes I ended up on tier 3.
     
  18. Elmo Clarity

    Elmo Clarity Journeyman
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    I just printed the AcmeBlockHolders and was test fitting it with the block. I measured the distance between the face of the block and the back of the holder at 28mm. Has anyone mounted these and did a 30mm screw work? Not sure if 2mm of thread is enough for the screw to engage the tee-nut. Or is there another way this is suppose to mount?
     
  19. Carl Feniak

    Carl Feniak Journeyman
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    Sorry, I can't help you much here as I didn't use or design this part. NickM came up with it. Here is a photo he shared a while back. Since you have the top and bottom bolts, it may not be necessary for the block bolts to attach to tee nuts. Maybe there is a standard or lock nut on the backside? Not at home so I can't view the part.
     

    Attached Files:

  20. Elmo Clarity

    Elmo Clarity Journeyman
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    Will try grabbing some M5 30mm from HomeDepot and give it a go. But now that your reminded me of that picture... I like the bracket he made for the Z-bed support. Have you seen if anyone else has done something like those for 20x40? I know NickM used 20x60 for his Z-bar.
     
  21. hax0red

    hax0red New
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    I like it too sadly I'm using 20x40 for my Zbar. I was planning to try 25-30mm M5 bolts for the threaded blocks but for now I'm using a bunch of washers and the 40mm M5 bolts included in the BOM.

    I'm at the point of squaring up my frame and wondering if anyone else had trouble doing this? The build instructions are a bit hard to understand, it looks like each end is built, squared then bolted together but I'm trying to square the frame while completely assembled....I just left everything "snug" so I can slide any rails apart to ensure each side is the same length.

    Past this I believe I have everything to finish my build except build plate springs which I'm hoping a visit to home depot/lowes will solve. I am going to use standard limit switches since I'm running an Azteeg X5 and I read the makerbot style used in the C-Bot BOM don't work...

    [​IMG]

    Anyone have mounts designed for this type? Worst case I'll design some and post them here.
     
  22. hax0red

    hax0red New
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    Thanks for the comparisons, I really appreciate it. I went back and rebuilt my clone E3D V5 and got it running fairly well but the print quality is still not quite what my J-head is capable of producing. Oddly enough so far I have had better luck quality wise with PLA on my V5 vs ABS. My Jhead is a 0.35mm nozzle though vs the E3D at 0.4mm. I have some 0.2mm and 0.3mm nozzles for the E3D on order though(I prefer to print slowly with highest quality).

    I plan to design a mount for the J-head and C-Bot but also want to try a real E3D V6 but the $85 price tag is hard to swallow if it doesn't meet my quality expectations.
     
  23. gwandad

    gwandad Well-Known
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    Thanks. I'm using Robotdigg attached 8mm rods 350mm long, so won't permanently mount them for a bit yet, but I tried them on, unmounted & they're like Cinderella's slipper. Perfect fit.
     
  24. adamcooks

    adamcooks Well-Known
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    There is an open builds plate for the mini switch. When I get home I will look, I imported all the open builds parts into my fusion project. Pretty easy to get an stl from that.

    Make sure your floor/table is level before building your bot. The guy I bought my house from liked to dabble in the"grey"areas. I was dumbfounded at why my frame was so off. Like 7-9mm from square. All my cuts were good, all the rectangles were equal. Turned out my floor is sloped, when I moved it to a different location the frame magically was square.
     
  25. adamcooks

    adamcooks Well-Known
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    Here is the .stl for this. Thats a pretty good start, you could easily modify that slightly. That could work pretty directly for Z, one of your axis(the one that mounts near the motor Y on mine, X on Carl's i think. This would let you mount a switch on the gantry plate, ( like my X ) I dont know where your endstops / axis are.


    @hax0red Are you trying to print hot materials? What are your thoughts on the V6 Lite? good for ABS and PLA, but probably not so great for PET(x)
     

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  26. Elmo Clarity

    Elmo Clarity Journeyman
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    In answer to my own question... I was able to successfully connect the Acme Block to the Z-Bar using 30mm M5 screws. It was a bit tight but I figure it just has to be able to hold the block in position as there are several other mounting spots that can deal with keeping things in place.
     
  27. Elmo Clarity

    Elmo Clarity Journeyman
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    I don't know if it has been brought up in the past, but I found these end caps for the V-Slot (http://www.thingiverse.com/thing:398515). It looks like there are only two places where they are needed. At the end of the legs, behind the X/Y Motor Mounts, there is a 20x20 end that is visible. It is not visible so might not be worth putting a cap on it. The other place is the end of the bars supporting the bed. That is visible. I had to scale these up 1% on X and Y to get them to fit snug.

    [​IMG]
     
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  28. hax0red

    hax0red New
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    Thanks Adam! I'm hoping to figure out the limit switches once I have the belts run ect, until then the picture isn't really clear lol.

    I normally print with PLA but also enjoy and need to use ABS at some points. For PLA I print at 180-210C and ABS 220-240C usually. I do have plans of one day trying out some higher temp materials like Colorfabb XT, Nylon, Polycarbonates ect. The V6 lite price is great but it has about the same limitations as the J-head so if the print quality can meet or beat it I'd say it's a clear winner, if not I would rather pay the extra $20-25 for the J-head. Honestly if there was a $100 hot end with amazing print quality I would gladly pay for it. I'll probably eventually buy a E3D V6, E3D V6 Lite, Hexagon, Ubis and MK8 extruder/hot end combo(same as Makerbot runs) and do a comparison to figure out which head offers the best quality/temperature range.

    I honestly haven't seen too many E3D prints that rival my J-head's quality so I'm not real hopeful. Here are a few examples of my J-head at it's best:


    [​IMG]
    [​IMG]
    [​IMG]

    Hopefully my C-Bot will beat this quality while being less fiddly then my Kossel.
     
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  29. hax0red

    hax0red New
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    [​IMG]
    Forgot to attach a photo I found of the Hexagon hot end's unique heat break construction. To me this just screams quality and really makes me wanna try a Hexagon. Just wish it came with 0.3mm nozzle and that they had the option to buy a 0.2mm nozzle(only offer 0.3-0.5mm).
     
  30. Carl Feniak

    Carl Feniak Journeyman
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    Nice, what nozzle size and layer height are you using there? Those are some pretty fine prints. The nicest I've done was with a 0.3mm J-Head @ 0.1mm layer heights, but I haven't done any fine detail work for a long time. That J-Head failed and I usually just print @ 0.2mm with a 0.4mm nozzle.
     

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