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  1. #1

    Prusa i3v gear slipping off Extruder motor

    Hey guys. Recently my printer stopped extruding filament and I noticed that the extruder motor was spinning but the gear was still. I put on the spare gear I printed and it was working perfect but after 3 prints the same thing happened

    I tried tightening the grub screw but it is incredibly loose and just wiggles around, it was like this on the original gear aswell.

    Any response would be greatly appreciated. Thanks!

  2. #2
    Technician
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    Am a right to assume you have some sort of wades extruder? Also I assume you have those parts in pla? Your motor may be getting hot enough to distort the plastic. You have a few options there. Convert it to a belt drive using a 16tooth alu pulley and a printed gear for the other end. Should give you a more durable piece that way.

  3. #3
    Quote Originally Posted by jaguarking11 View Post
    Am a right to assume you have some sort of wades extruder? Also I assume you have those parts in pla? Your motor may be getting hot enough to distort the plastic. You have a few options there. Convert it to a belt drive using a 16tooth alu pulley and a printed gear for the other end. Should give you a more durable piece that way.
    I do have a Wades extruder and I'm pretty sure its printed with ABS (the original parts anyway), I am still using those original parts but I printed to gear in PLA. I don't think heat is an issue because I think the original ABS gear wouldn't of warped if that were.

  4. #4
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    How about this one? Should be more durable as well. https://www.thingiverse.com/thing:185269

  5. #5
    Quote Originally Posted by jaguarking11 View Post
    How about this one? Should be more durable as well. https://www.thingiverse.com/thing:185269
    Should be compatible with the Vslot extrusion yeah?

  6. #6
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    Just like anything in this world. You may need to modify the design a bit. Should not be that difficult. Are you using a bowden setup?

  7. #7
    Quote Originally Posted by jaguarking11 View Post
    Just like anything in this world. You may need to modify the design a bit. Should not be that difficult. Are you using a bowden setup?
    Nope

    /10char

  8. #8
    I might go with this one http://www.thingiverse.com/thing:389105 http://www.thingiverse.com/thing:97657 do you think printing the pulley will be ok or should I get a metal one?
    What you think?

  9. #9
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    I would get a metal pulley for the motor shaft. They are quite inexpensive.

  10. #10
    Staff Engineer printbus's Avatar
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    I didn't archive the link to it, but I do remember seeing a pulley designed for flatted extruder motor shafts, but the inner diameter would have to print perfect to work. BTW - you did properly add an M3 nut to the slot for it in the pulley, right? The words "incredibly loose and just wiggles around" makes me wonder this.

    EDIT: Well, at least some of the pulley designs accept a nut to hold the grub screw. I'm assuming the one you're using does as well.

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