He 3D-printed a rare Big Boy water tender with ChatGPT: 76 revisions, 10 test prints
natesiggard · x · 2026-10-21
After failing to find a G-scale water tender for Union Pacific's Big Boy anywhere, a hobbyist modeled and 3D-printed his own with ChatGPT's help—76 revisions, 10 test prints, two finished classics, now viewable in a 3D simulator behind the Big Boy. He draws a parallel between the Transcontinental Railroad and AI: both connect resources for ambitious builders, and both were feared in their time.
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