Shenzhen Alu Rapid Prototype Precision Co., Ltd.

Yes, you can 3D print metal, and it's a well-established industrial technology (often called metal additive manufacturing). It's not like regular plastic FDM printing though — it's more complex and expensive.

Here are the main technologies used for real metal 3D printing:

Yes, metal 3D printing is real and widely used in industry (SpaceX, GE, Boeing, etc. print rocket engines, turbine blades, etc.), but unless you have serious budget and facilities, you're better off using lost-PLA casting or sending files to a service bureau (Xometry, Protolabs, Shapeways, etc.) for real metal parts.