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How to make a drill press with pulley ? You can watch this video and go....
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Did you see this ? Drill Press
I print a Cyclone Separator file that I downloaded from the internet on a 3D printer. I'm trying to make a Dust Collector using the resulting Cyclone Separator.

In this video, I make an adjustable drill bit. I start by using the metal I cut from the M12 bolt. Then I am cutting a Spade Drill Bit. Then I combine the two.