Ralph Wrote:I assume you have some sort of form inside the cars and only glue a little coal on the tops?
I cut a piece of foam core board to slightly smaller than the inside of the hopper car. I attach Das modelling clay (an air-drying clay) to the top of the foam core and shape it into the rough contours of a twin peak coal load.
Once dry (it changes colour when dry) I paint the top and sides of the load with black acrylic paint - some paints eat into the foam of the base. I also bury a small magnet into the middle of the load so it protrudes slightly, to enable me to pick the load out of the car with a small steel screwdriver.
After crushing a piece of coal with a hammer - put the coal in a plastic bag before pulverising to stop the bits flying everywhere - I paint the top of the prepared load with undiluted white carpenter's glue, before sprinkling on the coal.
Leave to dry and touch up any patches, then file off and bits that overhang the sides, and Hey Presto you have a coal load which just sits on the angle between the ends and the angled hopper chute.
Although the load being lifted out is for a gondola, the principle is the same
PS I get my small magnets by breaking magnetic map pins
Jon