COULD this be safe for dagger rust removal?

[LandZack2013]

Hello forum,

Could this be a safe option for removal of rust on daggers? The one in post 4 is the one I am talking about? Looks safe...

http://dev.wehrmacht-awards.com/foru...d.php?t=434411

[busterz111]

I posted there Just now but will do it here also...These are NOT cylinder heads or car parts we are dealing with...There is NO clue as to Long term problems.