Spinning gears in engines have always fascinated me. To watch how the gears perfectly fit together and work in tandem to complete some objective is very satisfying. When I found this project on Thingiverse I was excited, because it was both educational and cool!
Initially, printing the parts took a some weeks. Initially, we started printing the parts on our old Ultimaker, a printer we had built ourselves. Unfortunately, the quality of the prints left something to be desired, so when our newer MakerBot Replicators 5th Gen arrived in summer 2014, we got right to work printing the pieces that had to be more precisely crafted.
Following the instructions on the Thingiverse link, we first put three small planet gears around one of the Sun gears, the big middle piece.
We then attached the larger planetary gears on the outside holes, again using the printed pins.
Finally, we have to put the Carrier gear into the large Orbital gear. With some fiddling around, and some pushing, we finally got the whole thing in there.
Now the rest is easy.
We pushed the crank shaft through the middle hole (using some lubricant, otherwise it is a bit tight). Then we put together the loose-fitting stand pieces.
There is an entire section on Thingiverse that has Engineering projects, so if you enjoyed this check the link out!