Following the mix up around the Oscars where La La Land was announced as best picture when the actual winner was Moonlight. People were scrambling to find who was to blame and how could such a blunder happen. Social media…
A new technique has proved useful in finding out more about the oldest known lost wax casting. Scientists were able to use a new approach called photoluminescence imaging to discover more about the chemical makeup of the 6000 year old casting discovered in Pakistan.
Lost Wax castings are used as a cost effective solution for high volume precision parts where they would otherwise be too expensive to produce from a machined or turned part. The process involves creating a mould using molten wax. Multiple moulds are then attached to a wax runner which are then dipped into a ceramic slurry. This creates a heat resistant layer outside of the wax mould so that when heat is applied the wax mould melts to produce a ceramic shell.
Investment castings or lost wax castings is a metal forming technique which has been around for thousands of years where hot molten metal is poured into a ceramic cast to form a solid metal part. Modern day castings are made up of different alloys and specialist metals depending on the specification and use of the part.