Rust removal without damage

[Evan.S.Merritt15]

i have received an old USA made colonial ranger lb 125. It has patina on the blade, in between the handles where the blade is stored when closed, and on the liner. I took some of the blade and liner rust off with a lansky eraser block but I need to get to the rust in the handle. I want to try vinegar but don’t want to take the knife apart. Would vinegar damage the plastic handle if a left it all together over night in vinegar?

 

[Bill DeShivs]

Leave the vinegar alone.
Tear off a small piece of 0000 steel wool and stuff it between the liners. Use a popsicle stick, brass rod, etc. to push the steel wool in and work it back and forth.
Then flush everything with WD 40 a couple of times.