How to Make a Bottle Mould

A bottle mould can be made of a number of materials. Most often, metal bottle moulds are cast iron. These materials are durable and can withstand the thermal and mechanical stresses that glass imposes. However, hot glass will corrode cast iron more quickly than cold glass. This is why bottle molds made of cast iron are preferable when creating glass bottles. If you want to create glass bottles with a metal bottle mould, there are a number of different materials you can choose from.