its simple and easy…take a board of sheetrock and cut to sections…then get a file or tapered drinking bottle and wrap with any grit sand paper…then grind down over whatever you are putting it on
Have you actually done this? If so, I suggest you get all your motive power and get set to start tearing it down, cleaning out the sheetrock crud that will build up from just a few runs around the layout, and relube everything. If you’re lucky, your engines will still run. Sheetrock dust will go down easy and it may even look like snow but sheetrock dust is about the hardest material in the world to control. It will get in all your motive power and rolling stock and stain all your scenery, not to mention any clothes you’re wearing every time you touch the layout.
There are about a million ways to make snow but this has to be the worst ideas I’ve ever heard of. And you had to put it in bold on top of it? Bad first post, graffititrains
Plasterboard is made of the mineral gypsum, which is extremely abrasive. When you griind up a piece of wallboard into powder, you are creating an extremely abrasive, light-weight powder that can get into and destroy any moving mechanisms, including locomotive motors, gearboxes, wheel bearings. etc.
Using powdered gypsum to represent snow on a layout is a very bad idea.
I don’t know if it’s a bad idea or not, but gypsum is one of the softest minerals around, with a hardness of only 2 on Moh’s scale. You can scratch it with your fingernail.
Mike