Quickest way to make silver powder
I'd like to use silver in a project, and I'd like to know what the best method of making it quickly - I'm not interested in paying $30 to ship it to Australia. Would I get any success by filing a sheet of silver, or is there a better way of doing it? Or can I buy it somewhere locally?
Here's an example of what I'm looking for, I'd like the texture to be fairly course, not the fine powdered stuff I've seen elsewhere.