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[Tom Joad]

Electron verses laser beam speed.

I think a visual comparison between electron beam and laser beams best illustrates how fast EBM is compared to laser. The old cathode ray tubes once used for television should give you a good idea of how fast an electron beam can be guided using electromagnets. EBM is no different in that regard. There is no way to guide lasers using electromagnets. They have to use mirrors with mechanical aiming devices.

Titanium 3D Printing in Action - Electron Beam Melting (EBM)

About 2 minutes in you see the laser heating the powder.

Inside Concept Laser, The Maker Of The World’s Largest 3D Printer For Metals