Processing Aluminium Shavings

[Bju90]

I have access to Aluminium shavings from a machine shop. Is there a safe way to process these down? I don't need a fine powder but something like 40-60 Mesh?

I also have access to some Titanium shavings, although Ti mechanical properties I could imagine make this more challenging. 

Ti spone too but this is a bit expensive. This is much finer to start off with and should be quite brittle so I'd imagine I could manually process this without too much difficulty. 

Edit: I just found a few pieces of old bar stock offcuts too. I'd prefer not to but I could make some finer shavings using a file by hand or with a drill press and the right tool. 

Edited February 21 by Bju90

[xag]

You can start by crushing the shavings down with a mallet, a dedicated coffee grinder or mortar and pestle(after you have run water through them to clean any lubricants or grease from the shavings).

Then slap that into a ball mill with its ceramic or lead media and mill for maybe 30min-1hr until switching to 30 min increments until you see your desired particle size.\

I recommend switching to 15 min increments as you get closer.

 

[Mumbles]

Aluminum and it's alloys tend to be harder than lead and it's alloys. I'd suggest against using lead as a milling media. Stainless steel tends to be the most popular for reducing metal particle size.