This is a very simple solar engraver. Do it is presence of supervision and do have a sun-glass with UV protection. In this project, we will converse the sun energy into a single point using a convex lens. Adjust the angle and distance for the lens from the focusing floor until the light dot is smallest in size and almost circular. Keep a piece of cardboard or paper on the floor and move it on the XY plane as per your design. The small high energy point will burn the wood and engrave that area. Enjoy and be safe.
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