Quote Originally Posted by pichuete View Post
im having the same issue . i think my nut trap is not holding the nut firmly . also i have a wooble rod . where did you bought your spare rods? i bought some rods last week but the dont seem to be very smooth . my Z axis is Squeaking a lot now .
A couple have ordered raw stock from Grainger based on the discussion here - http://3dprintboard.com/showthread.php?3461-MakerFarm-8-quot-i3v-Prusa-build-by-Printbus&p=44079&viewfull=1#post44079

AbuMaia points out later in that thread that one could try just flipping the rod(s) end-on-end as a temporary fix.

On the "squeaking", do you have the spiral-cut shaft couplers? They can tend to ring, making it sound like the Z-rod is squeaking. I added two turns of clear packaging tape around the couplers to dampen the spiral so they don't ring.