Classic SD Scissor rust

[kaevin]

I made a mistake not washing my keys after a sweaty run. Left everything sat a night and either a key has rusted and some of the rust went into the classic SD or the SAK rusted from the sweat over night. I have washed,  cleaned and lub  it. But now the scissor has a tiny black spot on both side, the action is gritty and the spring alone can no longer push the scissor fully opened. 

The scissors is the thing I love most about it. Any suggestion on how to fix it? I have tried to oil it and move it, it would improve a little, and worsen again after a few days. I am not sure if not all the rust are out or it keeps forming new rust.   [ You are not allowed to view this attachment ]  
Black spot

  [ You are not allowed to view this attachment ]  
It opens and stop there by the spring

[IMR4198]

Try using a brass brush on the rusty spot.  If you don't have one, try a little piece of wood like a toothpick.  Give it a scrub with the wood.  That is a tiny spot.  If there isn't any rust in the joint of the scissors you can try the third method to remove the spot.  Use a piece of carbide paper to buff it out.  Something like 600 grit.  Best wishes.  G
 

[nate j]

I have carried various SAKs in sweat-soaked pockets over the years, including overnight and multiple days in a row, and nary a spot of rust.  I would be absolutely shocked if one rusted from a single night in some sweaty shorts.

However, I have seen Vic scissors build up “gunk” (this is the appropriate technical term) near the pivot like that, fouling the action.  It was able to be scraped off.  I would start with a fingernail, but not hesitate to move up to something metal.

Please let us know how it goes!

[cbl51]

I have carried various SAKs in sweat-soaked pockets over the years, including overnight and multiple days in a row, and nary a spot of rust.  I would be absolutely shocked if one rusted from a single night in some sweaty shorts.

However, I have seen Vic scissors build up “gunk” (this is the appropriate technical term) near the pivot like that, fouling the action.  It was able to be scraped off.  I would start with a fingernail, but not hesitate to move up to something metal.

Please let us know how it goes!

I gotta agree with Nate, start with a fingernail, and maybe move up to a very fine polish cloth or 0000 steel wool. Are you sure it's not just some spot of gunk on the tool?

[kaevin]

Theres somehow a bit of stickiness or rubbing when near to the point the spring fully extended. Instead of oil, spray rp7 and worked it like 100 times, and spray again and repeat. Now it has improved to the point it is usable, but still feels a bit less smooth. Not sure if anything get trapped between. I think it doesn't have anything to do with the black spot.