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better hobbed bolt

Discussion in 'Mods and Upgrades' started by CAMBO3D, Jul 6, 2013.

  1. CAMBO3D

    CAMBO3D New Member

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  2. CAMBO3D

    CAMBO3D New Member

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    Replaced with recessed hobbed bolt and filament stays centered, throughout the print.

    CIMG2581.JPG
     
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  3. SPyKER

    SPyKER Active Member

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    Harry, if you look at this, is there a spec on the current hobbed bolt? Or even just the bolt dimensions?
     
  4. Harry

    Harry Team ROBO 3D
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    Hey SPyKER as spec, what do you want and I can get you the info.
     
  5. SPyKER

    SPyKER Active Member

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    Well, how about the length, the size, the shoulder length, the pitch, distance to the hob, hob width.
     
  6. SPyKER

    SPyKER Active Member

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    Basically, looking to find out a way to buy a backup bolt with more of a channel in case the stock one needs replacing.
     
  7. Harry

    Harry Team ROBO 3D
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    Will get you that info!
     
  8. Leon Grossman

    Leon Grossman Active Member

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    I don't care about any of those values... as long as someone can point me to a link to buy the bolt I need! :D
     
  9. Harry

    Harry Team ROBO 3D
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    Hey Leon, it comes with a Bolt, but if you need an extra I've spoken with the team and they're getting the exact info for us.
     
  10. Leon Grossman

    Leon Grossman Active Member

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    Harry, I know it comes with a bolt. I'm more interested in finding a bolt with the proper recess. Basically, anything cheap to improve the quality of my prints/reliability of the machine off the bat is on the table.
     
  11. Seshan

    Seshan Active Member

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    It's probably standard, It's a wade extruder so any hobbed bolt that works with the extruder should work with the RoBo.
     
  12. CAMBO3D

    CAMBO3D New Member

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    http://www.ebay.com/itm/181167830956?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649

    m8 bolt, with 26mm hobb, this will get installed with the nut on the backside instead of the gearside.

    if you get a similiar one to robo where the bolt installs with the nut on the gear side. the hobb is about 14.5mm

    i haven't tried this one yet, I bought it to replace the one that I took out of my other printer, to use in the robo.
    but dimensional wise, it looks like it will fit. It comes with hardware to space it so the hobb is where you need it be, so its somewhat adjustable.

    CIMG2773.JPG
     
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  13. Seshan

    Seshan Active Member

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  14. JDM_

    JDM_ New Member

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    I am currently having issues with the filament slipping off the Hobbes bolt and looping inside the extruder.

    Which one of these would be better for RoBo?
     
  15. JDM_

    JDM_ New Member

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    This is what I'm getting. The nozzle is not clogged when this happens.
    ImageUploadedByTapatalk1373989685.549898.jpg
    It's happened a couple times.
     
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  16. 1d1

    1d1 Active Member

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    As I don't have a printer yet, I can't speak to the fit, but this: http://www.thingiverse.com/thing:48859 or something like it could be one part of the answer. If you look at the number of filament jam solutions people have posted, it seems to be a common problem. Personally, I plan on replacing the hobbed bolt with the one Cambo recommended above as well as adding a guide to help keep the filament centered. If I ever get a printer.. when I get a printer...
     
  17. JDM_

    JDM_ New Member

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    Cambo... I ordered one of the bolts you recommended from ebay....
     
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  18. SPyKER

    SPyKER Active Member

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    Me too.
     
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  19. tesseract

    tesseract Moderator
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    ordered mine about 12 hours ago no shipping either and no tax hmmmm not sure why but I'll take it
     
  20. Mike Kelly

    Mike Kelly Volunteer

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    Cambo just got that guy a lot of business :p

    Ordered one as well
     
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