Palembang Keris

[Green]

Originally Posted by A. G. Maisey

Martin, all I use is just ordinary household white vinegar.

Any little bits of hard rust I pick off with a sharp tool, a little pocket knife blade works OK, I use a saddlers awl.

I wonder how one can do this method to get rid of hard rust?
won't it destroy the surface of the blade?

A video of how this is done might help.