I am seeking to build an operating coal tipple. As a result, I will need about a gallon of material to load into cars. I do not want to add too much weight as each brass H21 weights about 1lb and pulling up to 25 models is a fair bit of drag.
Has anyone found an economical source for coal that does not chip/break when loaded and is a realistic size? I was thinking of chipping a black pvc sewer pipe....
Thoughts and help appreciated!