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I was looking for a way to get rid of wood dust in the workshop. I thought of making this air blower and I got to work. You can find the details in the video. The PDF download link is below.
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PDF Download : Dust Collector Centrifugal Air Blower
How to a make marking tool. 2 in 1 wood tool. Beam compass tool and marking gauge. Simple, homemade. You can mark to cut wood in the middle. You can draw a parallel line.

I make a wood cutter from a angle grinder. This wood cutter looks like a circular saw.