Using an agate stone to finish alligator skin - GIF

Using an agate stone to finish alligator skin.

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Previously:

Alligator attacks tractor - GIF
Alligator rips apart truck - GIF
Remote-controlled alligator head - GIF

That machine is called a "glazing jack" the ones I have seen (31 years in the leather industry) have glass on the arm that does the work.

I remember when I was a kid, alligators were endangered, and very convincing fake alligator goods were sold instead.