Road Work Ahead? Uh, Yeah I sure Hope it does!
thingiverse
Based on the Vine by Drew Gooden, if you print it at 02 layer height, you can swap filaments from orange to black after layer 8. It took me about a half-hour to print at 02 layers with a 04 nozzle. The ring was big enough for a key ring, but feel free to edit if you have a larger keychain.
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