An EvapoRust trick. Those of you that have tried to take the rust off a big object that you can't completely submerge in the liquid have likely learned that a black line that is essentially impossible to remove, will form where the liquid meets the air. I've devised many methods to make sure I can completely submerge something, but I had a brainstorm when cleaning the old German hex waffle iron.
All I needed to do is to prevent the air from getting into contact with the iron and liquid at the contact. Something waterproof might work. So I smeared Vaseline (Petroleum Jelly) on the handles. Then made sure the liquid hit the handles on the jelly. Worked perfectly. No black line and a nice clean finish.
Pictures to show it in progress.
I did put Archimedes to work too, the pictures tell the story.
First pic, you can see the smeared on Vaseline. Covers enough area to be sure the liquid/air line is protected.
Second, waffle iron in a 5 gallon EvapoRust can, but the level is below the Vaseline.
Third, Archimedes at work, filled a ziplock bag with water, put it in the can and displaced the EvapoRust high enough to hit the Vaseline.
Fourth, doing the other end of the iron handle. I just had it hanging from a rack to hold it at the right level in the bucket.
