5min chapter

Cleaning Up: Leadership in an Age of Climate Change cover image

Disrupting Manufacturing with Laser Printing - Ep114: James DeMuth

Cleaning Up: Leadership in an Age of Climate Change

CHAPTER

Powder Spreading - What You Need to Know

The industry that has been around for a long time is essentially focusing a laser beam down to a point that's smaller than a human hair and diameter, right? And they make a little weld pool. They weld the local powder to whatever's below it, generally the previous layer. This results in not just heating up the powder to its melting point, but heating it up to its boiling point or beyond. Black soot absorbs laser light really, really well. That means your laser loses intensity on the way down to the powder and then it doesn't melt it. We want to have high throughput and high resolution at the same time.

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