PRUSA I3 ANTI Z WOBBLE + X BELT TENSIONER
Pour les francophones : http://www.ouinche.com/impression-3d-z-wobble-sur-prusa-i3/
This version is for M5 Z axis. You can easyly adapt the skate for other diameter and then share it ^^ )
EDIT :
Addition of M6 and M8 skate for 6 and 8 mm threaded rods.
Principle :
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Decoupling the traction and the guidance of the Z axis.
Traction is now assumed by the skate. Guidance by the X motor and the X idler. If your threaded rod is not straight as your smooth rod ( and theren't ! ) the skate will move independently of your Z axis.
You may try it with your classic ( or rework , or enstein , ... ) X motor and the X idler but I don't know if ther are enought surface in contact to do this correctly.
So I re re worked the X motor and the X idler to increase the surface of contact with the skate. And I add on the X idler a belt tensionner system. I add a X endstop support too.
Needs
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2 M5 Nuts ( skate X 2 )
3 M4 Nuts
3 M4 Screws
Of course the plastic pieces below ( print 2 skates, one for each Z threated rod )
Instructions :
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Embed the M5 Nuts into the skates ( one nuts per skate )
Assemble your X motor and your X idler ( Instruction may be found at http://www.thingiverse.com/thing:247992 djvdpant is the farther of this design )
Cons :
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- Be carefull, your Z homing is now different, skate may hit your Z couplers ( if you have "hight" couplers like me ) you may up you bed.
- With this system, gravity pull the Z axis go to this home, so, you can't print in space or with your printer upside down any more ...