Metal powder is the backbone of metal 3D printing. Though it’s difficult and dangerous to handle in its raw state, its unique features make it the preferred metal stock type. The vast majority of metal 3D printing technologies utilize metal powder. As a result, the major differences between types of metal printers relate to how they fuse the powder into metal parts. These methods vary greatly, ranging from using high energy lasers to fuse loose powder to extruding bound metal powder filament. In this article, we’ll take a look at the most heavily used types of metal 3D printing, how they work, and why they’re beneficial.