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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.
Making Video :
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Did you see this ? Countersink Drill Bit making
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.

Looking for a compact and easy-to-build benchtop table router? This DIY project is perfect for woodworking enthusiasts who want a portable, sturdy, and space-saving route