19 – Greyscale Laser Engraving

The Tangerine Tiger Series with Russ Sadler

In this Series, Russ has purchased a new 500 x 300mm, 50W laser machine from eBay with a view to modifying and upgrading it. In fact, he rips out the glass laser tube and high voltage power supply and replaces them with an RF laser source and PSU from Cloudray. Find out how the expensive RF laser source compares to a glass CO2 laser tube and prepare to get your hands dirty! So lets learn about Greyscale Laser Engraving.

If you are considering purchasing a CO2 laser machine with an RF laser source from one of the big boy suppliers, I would suggest you check out this series before making a decision!

Contents

Grayscale engraving has two main uses, well…., one and a half The flaky HALF is for replicating greyscale images onto organic materials that will “scorch”. The more solid ONE is for 3D engraving of materials that will erode, such as wood and some safe plastics. This session deals with the most fragile application, photo engraving, and examines the issues that prevent it ever being serious competition for dithered laser engraving. The RF laser’s rapid switching capability makes it a perfect tool for doing such a task, however, here we discover the weak link in the process

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