Soil solarization. Follow these four steps to solarize your soil: cultivate and remove plant matter; level and smooth the soil; irrigate; and lay a clear tarp on the soil surface for 4 to 8 weeks, depending on local conditions.
Die casting is a manufacturing process that can produce geometrically complex metal parts through the use of reusable molds, called dies. The die casting process involves the use of a furnace, metal, die casting machine, and die. The metal, typically a non-ferrous alloy such as aluminum or zinc, is melted in the furnace and then injected into the dies in the die casting machine.
Die-cast toys use real metal in the mold rather than just plastic, which is why they tend to be much heavier than their plastic counterparts along with earning the name die-cast. While this process dates back to the beginning of the 20th century, the practice remains in use today with some toys, particularly high-end collectibles.