Summary

While redoing my end caps and adding a hole, I realized it started to look like Sid...

So I added some hair to make it clearer, though Sid only has eyebrows.

Instructions

There are a few tricky nuts on the inside of the Ultimaker when changing the end caps.

Update: use my calumet to hold the nuts in place: http://www.thingiverse.com/thing:44118

Initially, I was able to keep them all in place with my stock little finger (not "thinger"), changing one screw after the other so they did not fall (in case they fall, I remember that a long curved set of pliers helped a lot).

There's a Batman version also: http://www.thingiverse.com/thing:24839

Happy new year :)

Bearing rod end caps v2 - Ice age edition