HO Slot car cleaning block

thingiverse

This is a simple block to sand the metal contact rails on an HO scale slot car track. When its done printing you may need to drill out the holes with a 1mm drill bit. Then just push 2 push pins through the holes and grind down the sharp tips of the pins. My pins were a very tight fit but you may need to glue them in if they work their way out. Push a piece of sand paper onto the pins and your ready to go!