Union Pacific "Big Boy" Locomotive
UPDATE: Added replacement drive wheels. These are replacements for the "flat back" drive wheels that designed to print easier with less detail. Here is the 1/15th scale Locomotive that I made for Makerbot in 2013. It was created to test…
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![[PFBS 12 C5] Union Nut](https://media.printables.com/media/prints/378943/images/3182283_9a8cc0c6-60eb-4883-a3e8-eb84e0d5fe88/union-nut.jpg)



























































