3-in-1 Multi-Function: This vacuum investing casting machine combines melting, vacuuming, and molding functions in one. It completes the entire forging process, making your jewelry creation more convenient and efficient Powerful Vacuum Capability: The large thickened vacuum hood with a 3CFM vacuum speed quickly extract air, eradicating bubbles and burrs from dies. It improves surface smoothness and enhances the quality and precision of your final product Upgraded Oil Filling Port: The oil filling port is located on the top of the casting machine, allowing you to easily add vacuum oil without disassembling the back panel. Standard line design for simple oil addition. Oil not included Easy to Operate & Complete Accessories: The vacuum casting machine features a precision pressure gauge, one-button On-Off switch, adjustment rod, and heat-dissipating back panel for easy operation and adjustments