How to post pictures ?
Oil and fine steel wool.
if you have ever watched those shows on TV if you are removing or altering the finish you are removing the patina on that item and you are now trying to restore it. you cant be taking chemicals or steel wool to an old item and keep the current patina on it. not saying this is a bad thing but i like to watch alot of those shows!
+1 - See this thread... http://www.garagejournal.com/forum/showthread.php?t=154540White vinegar will work as well, I've had good success cleaning up rusty flea market tool finds.
This thread is a waste of time without more details. People keep posting different suggestions for chemical rust removers while completely ignoring the fact that bluing is a form of rust and any original finish could be completely ruined by doing so. And the OP has left the building so what's the point...There are no absolutes if no one knows anything about it other than that its a ww2 bayonet. What model, a mine run standard issue, paratrooper or an experimental model?
What country made it and at what point, pre war, early war or late war?
Is any of the original finish left? How bad is the rust ?

This thread is a waste of time without more details. People keep posting different suggestions for chemical rust removers while completely ignoring the fact that bluing is a form of rust and any original finish could be completely ruined by doing so. And the OP has left the building so what's the point...![]()
Either way you can't go wrong with wiping it down with a thin oil (like 3-in-one) and then just leave it alone.
I like this! Once you take the rust off, you can't put it back on in the same way. That said, I have no idea if WW II bayonet has a lot of value. It would probably have to be something real special to have big value, so if you want to display it and have it looking good, I say go for it.