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You can see how to easy build a simple dust collector in this video. I made a dust collector from two plastic buckets.
Making Video :
Go to this video's Youtube page and make a comment.
Did you see this ? 3D Printed Cyclone Separator - Building - Testing
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.

Very useful and cute tablet stands. You can easily make it using 8mm plywood.