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 updated my Drum Sander. This drum sander now has a motorized slide. No need to use your hands anymore to push and pull.
Topic of the Week Sanders
If you want to do a smooth sanding, you need a tool like this. This sanding tool, which looks like a hand plane, will come in handy.
After watching this video, you can download the free PDF document and make it easily. There are many 90 degree corner clamp videos on youtube. But this is a little differ