ToMcat the Pen Plotter

This is (another) printable pen holder for the Thing-O-Matic/Cupcake. I tried to bring at least something new to the party by stretching my artistic skills to the absolute limit for your enjoyment.

UPDATE!!! 2011-3-20:
Youtube video of first gcode print...
http://www.youtube.com/watch?v=NR3ZwVLx-xE
...would you say it's as fast as an F-14?


Youtube video of (manual) test:
http://www.youtube.com/watch?v=MEXvrOI0ZgY


I wanted a pen mount so I could draw etch resist on PCBs. The existing mounts on Thingiverse are either not for a Makerbot:

http://www.thingiverse.com/thing:3593 Mendel Pen Holder
http://www.thingiverse.com/thing:3526 Mendel Pen Spring Mount (oooh, springs!)

Or were using a whole servo motor in the design (for something that's sitting on the Z platform!):
http://www.thingiverse.com/thing:4185 Makerbot's Unicorn Pen
http://www.thingiverse.com/thing:4200 Printable Unicorn Pen

Or seemed like perfectly sane designs I should probably use but for my lo