Prusa i3v on the way!

[printbus]

...I would also recommend using loctite blue when assembling your printer to make sure things don't rattle loose over time. Just use it on structural parts you wont have to tweak or adjust later. Don't use it on the adjustable delrin idler or heat bed adjustment screws.

Definitely. I've been surprised that use of a threadlocker isn't mentioned more often. To clarify, you don't need threadlocker on any screws with the nylon locknuts. You also don't WANT it on those since nearly all threadlocker compounds degrade many types of plastic. To be safe, don't use it on the nyloc nuts and keep it off the roller wheels and anything else plastic.

EDIT: It should be obvious, but keep the threadlocker out of the bearings, too!