The mould decides
You dig some clay, fit the press with a brick mould and push. On the bench sits a green brick, and it will never become a vessel: the press sets the shape once. The kiln fires the green brick into a brick.
The same clay in a vessel mould becomes pottery; in an insulator mould, an insulator. One material, one machine, different things.
Clay
PressMouldUnfired
KilnFired
Brick mould
Green brick
Brick
Vessel mould
Green vessel
Ceramic tableware
Insulator mould
Green insulator
Ceramic insulator
The press sets the shape: once pressed, a piece can't be reshaped
A fired brick. Tap it and it rings. Now it is stone, and it will never be clay again.




Bauxite
Autoclavealkali under pressure
Alumina
Electrolyzerelectric current only
Aluminium
Neodymium magnet
Crucibleabove the Curie point
Demagnetised magnet
Museum of Rejects
Slag
Flash
Swarf


















