I debated whether or not to ask about this one but fearing doing damage to the blade I decided to eat my pride and get some input. I did a search the site but couldn't find anything...

I managed to get a old TI real frameback off the 'bay a bit ago and it showed up in pretty decent shape for an auction blade. Looks like just a bit of sanding and the frame and blade can be taken to full mirror or a nice satin - I'll decide how to finish it later. Scales will need to be replaced but that just gives me an excuse to create some creative new ones.

The problem is that after removing the set screw in the front, the blade won't come loose. I suspect it may have a touch of rust up under the frame and that may be holding it tight. It has what appears to be very sharp and deep etching (says Theirs Issard) so I really want to reuse the blade itself.

I know we've all experimented with quite a few chemicals for various things, but I was wondering if anyone has successfully used anything to free up a frameback's blade that may have rusted tight to the frame? No worries about damaging the scales since they'll be gone in the morning. I thought about various products to soak it in overnight but figured a few of you have solved this one already so why re-invent the solution?