Prusa i3v gear slipping off Extruder motor

[TehStranger]

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!

[jaguarking11]

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.

[TehStranger]

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.

[jaguarking11]

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

[TehStranger]

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

Should be compatible with the Vslot extrusion yeah?

[jaguarking11]

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?

[TehStranger]

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

[TehStranger]

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?

[jaguarking11]

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

[printbus]

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.