Let me change gear a little. Instead of buying stuff all the time, I am trying to take care of the pliers i bought in post 117. Here are the two pair of pliers. I worked on the smaller one today.
We can see that near the tip of the right jaw, there is a pretty serious rust spot. There is also a similar sized spot on the other side, just above the rivet. There is also a smaller spot on the other side, very close to the handle. So today I followed this guy's method to remove the rust, i.e., vinegar plus salt. I let it sit for one day. The result is okay.
The large spot of rust on the right jaw is gone completely. Same for the big spot on top of the rivet on the other side. If we look closely, a smaller spot on the top piece near the handle is the same. But the drawback is also clear. First, the places with thick rust coverage have their finish permanently damaged. There is some pitting going on. It will never be as smooth as the other places. Second, the beloved Craftsman logo is gone! Man, how I wish the logo was stamped on, instead of etched on.
There was also a third problem. The pliers were all covered in a thin coat of black stuff. I tried all kinds of cleaners w/o luck. Finally, something interesting worked. It is LA Totally Awesome Grill and Oven cleaner. With some buffing, I largely removed that layer. I believe if I use the pliers often enough, the black stuff might be gone by themselves in the years to come.
Any comments and suggestions? Thanks.