Guitar Building Inspiration: Minervino and the Viola Caipira

This is a video commentary on an inspirational figure, Minervino Guimarães, a guitar builder from the north of the state of Minas, in Brazil.
This is guitar building with minimal tools, with surprising and amazing results.
Link to the original video:
https://youtu.be/eDQg6qFjjy0
A Brazilian luthier called Walmir Rosa does a great review of one of Minervino's guitars:
https://youtu.be/pUgI3eYuGx0
And finally, here's my friend Bruno (on the mandolin, w/long hair & beard) playing a Choro, which is a very cool Brazilian musical genre:
https://youtu.be/NDbZNU7uHMk

"Unity, Peace, and Love through Music."