Burlington-based startup Desktop Metal Inc. managed to attract nearly $100 million in investment in less than 18 months thanks to a high-powered founding team and a vision to upend manufacturing with a better 3D printer.

The first stage of that vision came into focus Tuesday with the unveiling of Desktop Metal’s two-pronged printing system.

The company is launching an in-office printer — small enough to live on a desktop — for design teams that need to quickly prototype new metal parts, and…