The difficulty is of course to fill hoppers whose opening narrows towards the top. We will use a shape of extruded polystyrene coated with a flocking. Two questions: what flocking to use, and how to introduce this form inside the wagon?
Personally, I used 10 mm thick waterproof plaster wall remnants. Unlike conventional wall (BA13), it has a greyish-beige appearance, which looks like a certain type of blast furnace slag (there is a wide variety). It is easily crushed. The powder obtained is passed through a sieve of about 1 mm mesh (tea strainer!).
Here are examples of slag, according to the Centre Technique de Promotion des Laitiers sidérurgiques (Technical Centre for the Promotion of Steel Slag). The trouble is that the particle size is not specified!
|Crystallized blast furnace slag||Vitrified blast furnace slag||Conversion steel slag|
The product I chose looks more like crystallized blast furnace slag.
Well, by simply disassembling it! And, rest assured, this wagon is as simple to reassemble as to disassemble. The top of the body is simply clipped to the bottom at three points on each side, located approximately to the centre of each hopper. It can even be removed without tools, provided you get fingernails of at least 1 mm long!
The only precaution to be taken is that the brake pipes, the supports of which are trapped between the two parts, will fall. Put them aside carefully. As for the ladders, they were stuck to the top of the body on this copy (not on others), and I did not want to force to remove them, even if their position makes them very vulnerable!
In the central hopper, you can see a ballast of 32 × 32 × 2.6 mm stainless steel, weighting about 19 g, which is necessary because the wagon lacks at least 11 g to comply with the NEM 302. It may be more advisable to place steel or lead balls at the bottom of the hoppers in order to lower the centre of gravity.