I talked to our lovely production team about the process behind the creation of our upcoming collaboration with Johnson Tsang. Crazy to see how much goes into making something that looks so deceptively simple.
First a model needs to be built to create the casting mould with. To do this we take Tsang’s original sculpture and scan it. The data we get from the scan is used to create a model that is scaled to fit 1 litre for the small sculpture and 4 litre for the big sculpture. The model is then milled out of Ebabloc (polyurethane foam). When milling and additional 3% extra size gets added to account for the ceramic shrinkage.
Around the model a negative mould is created existing of 3 parts. The mould needs to dry one week before its ready for use. Once it’s ready the mould will be filled completely with ceramic slip. After 35 minutes this gets poured out and you’re left with a layer about 6mm thick. This is repeated until the right wall thickness has been achieved. Excess clay gets cut off and the cast sculpture is stamped and checked for possible damages. Now it has to dry for a few days.
Once dry the sculpture gets bisque fired at about 940 degrees celsius and the surface is fin sanded. The inside is glazed and fired at 1060 degrees. One last quality check and then they’re ready!
Great behind the scenes! How long does it take to from start to finish? And does it take several people to complete the entire process or is there just one person involved during each stage?
8 months ago·
The whole process takes 6 weeks with usually about 5 or 6 people working on different elements. Someone who specialises in casting, someone that does the touch ups, someone that does firing etc. 👭👫👬
8 months ago·