Choosing Used Cast-Iron Cookware

By Doug Bittinger
Published on April 6, 2017
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With proper care, cast-iron cookware will last decades.
With proper care, cast-iron cookware will last decades.
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Don’t let a little rust deter you from picking up a quality piece of cast iron. With a little restoration and care, that skillet will last you for years to come.
Don’t let a little rust deter you from picking up a quality piece of cast iron. With a little restoration and care, that skillet will last you for years to come.
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A cross inside a double-ring circle is one of the more recognizable Griswold logos.
A cross inside a double-ring circle is one of the more recognizable Griswold logos.
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This Wagner logo began being phased in starting in 1914.
This Wagner logo began being phased in starting in 1914.
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The Griswold’s Erie trademark was one of the first logos.
The Griswold’s Erie trademark was one of the first logos.
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Wapak Hollow Ware is prized by collectors, and their “thin-wall” design make them lightweight and easy to handle.
Wapak Hollow Ware is prized by collectors, and their “thin-wall” design make them lightweight and easy to handle.
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Once you get a full set of cast irons pots and pans, you won't want to give them up!
Once you get a full set of cast irons pots and pans, you won't want to give them up!

Cast-iron cookware is experiencing a revival of sorts. Maybe you’ve read articles or seen video of people who tout the superior cooking ability of cast iron, the material’s longevity — so nearly indestructible that collections are often passed down through multiple generations — and the healthful benefits of cast-iron cookware. Perhaps you have acquired a piece to try out, and now you’re hooked.

But buying a full complement of cast-iron kitchenware from retail stores gets pricey. Because it is so durable, be willing to invest time, rather than money, to seek out the pieces you want on the secondhand market. But where do you start? First, let’s examine what you will be looking for.

Old school vs. new school

Generally speaking, pre-World War II cast-iron cookware is smoother, thinner, and lighter than modern versions. There are two reasons for this. First is that originally, cookware was cast by pouring molten iron alloy into ceramic molds. When the casting cooled, the molds were opened to remove the pan and the flashing was ground off around the edges. The ceramic mold produced a smooth surface.

When manufacturers needed to increase production, they went to a sand-casting method to form their pans. The mold is a box of moist sand mixed with clay and organic binders. Some stamped the shape into two halves of a split mold. Others used a wax pattern buried in the sand. Heating the assembly causes the wax to melt and seep into the sand, leaving a pan-shaped cavern in the mold medium. Molten metal is then poured into the mold. When cool, the mold is broken apart to retrieve the pan. Very little grinding is required, no mold maintenance to perform, and the mold is reusable.

Sand casting leaves a rougher surface than the ceramic molds did. Some say this ruins the pan and only the older, smooth-surfaced pans should be used, but I for one make omelets in a sand-casted Lodge cast-iron skillet without any trouble. A smooth surface is easier to season quickly, but both can be made nonstick with regular use and proper seasoning.

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