Good video Grigg III.
I really liked the humor and how he explained how a drill works.
Of course there are some more tricks for different types of material.
Speeds, feeds and lube are also a big factors.
But for most of us, it gives a better understanding, of how a drill works.

Wonder if this should be moved to the tool threads?
Don


1967 GMC 9500 Fire Ladder Truck
"The Flag Pole"
In the Stovebolt Gallery
1946 2-Ton grain truck
1946 3/4-ton pickup,
1953 1-ton pickup
1957 1-ton flatbed dually,
1954 Pontiac Straight Eight
Of all the things I've lost in my life, I miss my mind the most!