150mm 15 planet gear bearing with holes

This is a modified version of this: http://www.thingiverse.com/thing:53451, I just added three holes to the sun gear.

You will likely need to break the gears free of each other after printing completes, I recommend a rubber mallet. If you attach this to a drill after breaking the gears free from each other after the print, make sure you have some sort of hearing protection because it is LOUD! It's more for fun than anything else!