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On arrival in the factory, the clay is first mixed to a smooth consistency by adding seven to eight percent water. The mixture is then fed to the brick press, which comprises numerous mould boxes, into which the clay is forced by a press. The mould boxes are sanded in advance, to prevent the clay from sticking to them. After every pressing, which simultaneously produces 1144 moulded bricks , the excess clay is removed. A drying board is then placed on top of the mould boxes, before the entire set-up is flipped 180° horizontally, and the boxes ‘bumped and dumped’: The green bricks are therefore deposited on the drying board. The drying boards are collected on so-called drying cars, which transport them to the dryers. The mould boxes are then rinsed and re-sanded for the next pressing. The rinsing water is discharged into De Rijswaard’s own water purification system.

Handmade bricks

A handmade brick is manufactured in a slightly different manner: In this case, machine-made pre-sanded slugs are cast into a mould. This lends the bricks their typical ‘craggy’ form. The excess clay is then removed using a cheese wire, whereupon the moulds are upturned and emptied onto the drying board. After rinsing and re-sanding, the process is repeated.