The blade on a molding plane can be released by tapping the notch in the wedge with the mallet. Reposition the blade in the plane, with the bevel at least an eighth of an inch shy of the mouth. Reset the wedge firmly, tapping it tight with a few gentle mallet strokes while holding the iron tight to the frog. If the blade isnât set square to the sole of the plane, a tap or two to one side or other on the portion of the iron that protrudes above the wedge should align it. Then set the depth as described above.
Simply putting dirty pennies in a solution of vinegar and hydrogen peroxide makes them cleaner. This video shows you how it's done. Please take appropriate safety measures when performing this and any experiment. Use common sense. Don't drink the stuff. Avoid contact with skin and eyes.
The very best way to clean your pre-1982 pennies is to use Wright's Copper Cream. It comes with a sponge in an 8 ounce round container, and it works better than any other method listed on this cleaning tips page! Just rub some of the cream on the pennies with the included sponge, rinse, and wipe dry.