machines/howtos/new-mini-sheetpress/step_1.md

Hard surface

We fill a tray of 62×42×20 with a layer of EPS rocks and add some colorful HDPE or PP. This layer should be only 10 percent of the boards weigh, about 200 grams. Then we add 1800 grams of trash plastic mix. We put the tray in our toaster between 2 hot aluminium plates. The tray consists of 2 parts, so that it is easy to open and clean by steel brush. The iron sheets are thin , so that not much energy is necessary to heat it up.