Signal
thingiverse
0 Scale Model Railway Signal. Wonder what printer can finally print this in high enough Quality. Inside the Signal there will be a smal PCB (8x8mm) with 3 LEDs (1.8mm from the outside edges, 1.8 mm Diameter), 3 resistors and a 3x3 mm connector. Challenge is to make this part precise enough. How I Designed This FreeCAD. Measurments from the original.
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