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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 :
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Did you see this ? 3D Printed Cyclone Separator - Building - Testing
In this video; I want to make a drill press vise. It is a great tool for drilling. You can make this item too. Easy and simple ! Powerful and useful drill press vise. You

You can use it both to drill 90 degree holes and to drill holes in the depth you want. It also works for joining two woods together, you can see in the video.