why investment casting?
In order to cast skillets that are both smoother and lighter, we use a completely different method than any other cast iron cookware manufacturer. The quality of the casting is limited by the quality of the mold that it comes from. Our molds are made from ceramic shells which allow for thinner wall sections and smoother finishes than any other iron casting method. Read more about our process below.
Tooling & wax template
An injection mold tool is created by milling a block of aluminum. The mold creates an exact replica of the skillet made out of wax. The wax patterns are assembled on a pouring system where multiple skillets will be poured at once.
The pattern assembly is dipped in a liquid ceramic material and coated with sand. After being coated the tree needs to dry out to allow the ceramic to harden before repeating the coating process. A total of 4-5 coats are needed.
De-waxing & Pre-Heating
Once the shells are built to the correct thickness, the assemblies are heated so that the wax inside the shells can melt out. The shells are pre-heated to about 1800° F and positioned to have the iron poured in.
Casting & Knockout
Molten iron is poured into the shells. Once they are filled, they are left for a few hours to cool and solidify. After the iron is cooled, the shells are broken off the iron parts and the parts are cut away from the assembly.
The pans go through several finishing processes to grind the gates smooth, remove all left over shell material and complete the final surface preparation. This includes sandblasting and inspecting the cookware.
After the metal is finished the skillets have 4 coats of flax seed oil baked on. This prevents rusting and prepares the skillets for use. We also finish them with porcelain enamel which goes on as a wet spray and is then cured at around 1700° F.
The handle was designed to fit perfectly in your hand and the forked design keeps it cooler than traditional cast iron handles. As we created various sizes of skillets, that handle didn't change. No matter what size skillet you are using, your hand stays the same size. The Redline skillets are designed with tall walls making them optimal for baking. The pour spouts have minimal deflection from the side walls which aid in removing food baked in the pan. All sizes also feature the flared pour rim.
need to get in touch?
If you have any questions, concerns, or want to reach out for any reason, we are happy to hear from you!