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HO Loco Test Track Roller
by rdbnogueira
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HO test Track Roller,
also needed;
4mm x 18mm screws, nuts and washer
1 wood board 48cm x 4,4cm x 2cm
electric wire
(may change the washer for bearing - bearing, must be electrically conductive)
aluminum rods 4mm diameter
copper tube 4mm diameter (electrically conductive)
https://youtu.be/7OGedFEmLAc
also needed;
4mm x 18mm screws, nuts and washer
1 wood board 48cm x 4,4cm x 2cm
electric wire
(may change the washer for bearing - bearing, must be electrically conductive)
aluminum rods 4mm diameter
copper tube 4mm diameter (electrically conductive)
https://youtu.be/7OGedFEmLAc
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