I am in the process of scaling up the CUT model to 75% of O Scale. The design needs to be broken into segments that are small enough to fit in the 3D printer. The 75% model still requires printing about 50 segments that each require 12-14 hours to print. Part of the back dome is shown in one picture below and the segment with the clock is shown with the small model. For the model I will use the bottom entry will be O Scale in height but the dome will be 75% of O Scale.
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