Is Evapo Rust safe for cleaning keris?

[David]

Originally Posted by Caedo

Is it necessary to do something to strip off any oil on the blade before using pineapple juice? Also, what would be the best method of applying it? Immersion? I found some rust starting to form on my keris today.

It would indeed be a good idea to give a keris a good wash in warm soapy water to help remove dirt and oil before the pineapple juice. The blade should be totally immersed and frequently (couple of times a day perhaps) brushed with a toothbrush.
But consider this...this is also going to remove whatever current stain the blade holds. If you are not prepared to re-stain with arsenic/warangan then you might not want to go so far. If you only have some minor rust you might be able to remove it with some WD-40 and some gentle brushing. For the more complete job though you can find some basic instructions in this old thread:
http://www.vikingsword.com/ubb/Forum1/HTML/000717.html