Cast-iron bathtubsare made by pouring iron into molds and then letting it cool and harden. This type of tub is very resistant to chemicals and is nearly impossible to scratch or dent. Cast-iron bathtubs usually have an enamel coating on them and are fire polished to give them a smooth ...
This is a comparatively inexpensive process, but the resulting sheets are softer than cast acrylic, can scratch easier, and may contain impurities. Extruded acrylic is still generally considered to be good quality, and is usually the more common type made available on the market. Cell cast ...