I bought a hand crank can opener (Oxo) because of the good online feedback and only use the "shake" dry approach. It quickly developed rust in between the metal. If I invest the time and scrub, I can remove most of the rust.
When I initially posed the maintenance question in IRC concerning rust and utensils and kitchenware in general, I got suggestions from "spend a little on a decent one" to "you want stainless steel". I stored both answers as helpful for future purchases.
Just recently I noticed two can openers in the office pantry that both show rust. Obviously these were neglected and showed more corrosion. After seeing this, I am curious if rust is actually normal and harmless. Are there more expensive stainless steel can openers that are rust resistant? Should I be drying more rigorously? I just thought of another possibility: should I keep the can opener in a jar of cooking oil?
Best Answer
First, I would suggest you buy a higher quality can opener. I have a Swing-A-Way that I inherited from my grandmother. I think it's older than me.
Second, don't submerge the can opener in water every time you use it. I only full out wash it on the rare occasion I splash or drop something all over it. The rest of the time I just use my dishcloth to wipe the blade and handles clean and let it dry in the dish rack before putting it away.