If you ever wanted to do some laser engraving, this project might be of some interest to you. The circuit is basically a variable voltage regulator that is powering a high power laser. I would highly recommend laser goggles when experimenting with devices like this.
Put something under your work that won’t burn, or you don’t care about. A sheet of plywood is disposable, but cheap sheetrock drywall is meant to hold flames down (the white side, not the paper side). Have somebody at Home Depot show you how to easily score drywall and snap it into small pieces rather than try to cut it. Makes it easier to get it home, too.”
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