Yes of course, just like any steel tool in your shop. Treat the vises as you would a table saw top, jointer beds or cast iron hand planes. In other words, keep moisture away, and keep surfaces waxed or oiled. You don't need much. We keep our shop climate controlled, but we don't go crazy with it. Just keep it warm enough that condensate doesn't get a chance to form. The cast iron handwheels will, over time and use, develop a wonderful rich brown patina from skin oils, like those seen on old machinery or old iron hand planes. If you'd like to treat your wheels to prevent this, or to prevent rust, you can apply a boiled linseed oil finish to the wheels, or Tru-oil. This will protect them from moisture and maintain their look for a longer period. It will wear off with use though. We recommend keeping them natural and letting a patina form. If you want to freshen up the rim of the wheel spin it around with one hand and with the other hold maroon or gray Scotch-Brite against the surface. Follow links below for more info on finishing options. Cold Bluing HandwheelsBaked Flax Finish