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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
We make our work easier by making use of the vibration created in the chisel with the cordless impact driver.
There are nice wood knobs in this my diy project. In this video I m making wooden knobs for use in subsequent projects. I did it using 18mm plywood but you can use differ