Plaster-cast of an actual leave of a horse-chestnut. The shapes of the leaves and stalk are imprinted.
The contours of the gypsum are transmitted to an iron plate with a thickness of about 3mm. Holes are drilled into the iron-plate. Then outline of the shape of the leave is cut with an iron-saw.
The iron leave is welded onto a iron post; to which extra reinforcement has been attached.
Around the original plaster-casts a rim of poly-urethane is casted. The inner-mould is secured with fluid wax, which after it has dried, is rubbed. On the bottom of this reservoir there is the print of the chestnut-leave. The iron shape ? with the holes in it-
is put on top of the gypsum.
In the contra-mould a two-component-rubbermass is poured. On the bottom the rubber duplicates exactly the shape of the print of the leave. Through the holes of the iron mould the fluid rubber diffuses. After some time this hardens and attaches itself
to the iron shape.
After the rubber has hardened, the stamp is released and the rim can be removed.
The leave of a maple-tree is being poured in rubber. Inside the rubber mould, there is the iron shaped form, with the welded post. Afterwards the stamp is used to make an imprint on a concrete plate. The iron shape is necessary to distribute the pressure sufficiently.
