My Spectrum 4-4-0 came with some spare parts and a bag of black powder, There is no info on what the black powder is for, any ideas.
Coal.
A thin coating of white glue and a little water on the coal load. Sprinkle the powder on the glue layer.
Takes the shine off the coal load.
Rich
The power used to simulate coal cinders for super detailing the locomotive. Place wherever cinders would settle.
It wouldn't be unusual for a few pieces of coal to be on the deck of the tender, or on the floor of the cab.