Awesome design Joo! (the original is here if anybody hasn't seen it already -> http://www.thingiverse.com/thing:248009) Here's the part files in a couple of other formats - IGES, Solidworks, STEP [UPDATED 23 MAR 14 - fixed a problem with the files for the SG-90 servo. Also, Joo has now merged the couple of lines of code I added to support a real time clock module into the main branch on Github. Look here to download it -> https://github.com/9a/plotclock ] [UPDATED 26 FEB 14 - added version 1.02 of the arduino code with support for real time clock, and ability to calibrate left and right servos independently] [UPDATED 21 FEB 14 - servos arrived from ebay today - have tweaked a couple of dimensions in the model to match the values in source code]