Steamboy - 26-1-2017 at 09:44
I need make aluminium powder, however, produce it using common sandpaper in aluminium foil, although effective, is slow and impractical.
Also, produced aluminium powder has a pinky-gray colour due to impurities (pink for the colorant of sandspaper), ie, aluminium can tear to common
sandpaper.
Also, I don't have coffee grinder nor other machine for create it.
What type of sandpaper can I use?
Is there better alternatives that doesn't implies the use of machines?
[Edited on 26-1-2017 by Steamboy]
Jstuyfzand - 26-1-2017 at 12:57
A ball mill, closer to machineless is not going to happen.
If there is an alternative, I'd love to hear about it.
Chlorine - 27-1-2017 at 02:50
Your best option is to buy or make a ball mill. Machined aluminum turnings work wonders because they're dirt cheap and brittle. I've tried using foil
in a ball mill and it was a disaster.
Morgan - 27-1-2017 at 06:03
Maybe by heating a roll of aluminum foil and then quenching it, it would become less ductile or embrittled enough to use.
gatosgr - 27-1-2017 at 12:53
You can also evaporate aluminum in vacuum and then quench it.
Meltonium - 27-1-2017 at 13:23
A nice, coarse file might work well instead of sandpaper. Although, it may be prone to clogging since aluminium is very soft.