HO Loco Test Track Roller

HO Loco Test Track Roller

thingiverse

HO test Track Roller also required; 4mm x 18mm screws, nuts, and washer needed. One wood board, measuring 48cm x 44cm x 2cm, is necessary. Electric wire is a must-have item. Note: The washer may be replaced with a bearing - the bearing should be electrically conductive. Four aluminum rods, each with a diameter of 4mm, are required. A copper tube, also with a diameter of 4mm and an electrical conductivity requirement, is needed. https://youtu.be/7OGedFEmLAc

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