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HP Rolls Out Metal 3D Printers

Author: Al Williams / Source: Hackaday

You normally think of HP as producing inkjet and laser printers. But they’ve been quietly building 3D printers aimed at commercial customers. Now they are moving out with metal printers called — predictably — the HP Metal Jet. The video (see below) is a little glitzy, but the basic idea is that print bars lay down powder on a 21-micron grid.

A binding agent prints on the powder, presumably in a similar way to a conventional inkjet printer. A heat source then evaporates the liquid from the binder.

The process repeats for each layer until you remove the part and then sinter it using a third-party oven-like device. According to HP, their technique has more uniform material properties than fusing the powder on the bed with a laser. They also claim to be much faster than metal injection molding.

The website claims the resolution is 1200 DPI which is actually just a hair over 21 microns. Well, technically less than a hair, we suppose. The build volume is 430 x 320 x 200 mm.

With Christmas coming, you might want to let your significant other…

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