Fast Melting: The Gold Melting Furnace Line Sealer heats up quickly. It can melt metals with melting points below 1100 °C in 48 minutes. Ideal for making gold nuggets, ingots or jewelry, melting recycling scrap, refining jewelry, and casting a wide variety of fast-melting metals including gold, silver, lead, copper, brass, bronze, aluminum and more. VACUUM HOOD AND BUILT-IN VACUUM PUMP: The vacuum hood is made of thick aerospace plastic, which helps to minimize the creation of burrs and air bubbles. The built-in vacuum pump allows for direct vacuum operation, and the built-in refueling device adjusts the amount of refueling with reference to a standard line. PRECISE PRESSURE GAUGE: Monitoring the current pressure helps to make relevant adjustments as needed to create a smooth surface. Durable metal housing. Efficient Heat Dissipation and Friendly Design: Large heat dissipation holes on the back provide stable heat dissipation and carry away excess heat generated during operation. Heavy-duty structure is well laid out for easy and convenient operation. Thoughtful details such as comfortable handles and rubber feet bring you more convenience. VERSATILE VERSATILITY: The fusion die casting machine is versatile and ideal for jewelry processors and artisans to create high-density fine jewelry.