MIMF

Really interesting post. Thank you for taking the time to do it. I have never drilled a bore using a D bit like this, but I think you have inspired me to experiment!

Natalia, I love your drawings! It looks like a really fun idea. The concept of having a tuning slit in the back of the pipe and then capping the top with a trumpet like bell can definitely work. The hemispherical rubber blowers might not be a large enough air source. As drawn, the pipes would produc...