This looks like a fun project to make. All you need is some copper pipe, a dowel, and epoxy. It seems like a fairly straightforward build, but beware of the “fipple”, apparently that is the hardest part to make.
I’m currently working full time as the Dexter F. Baker Professor of Practice in Creativity in the Masters of Engineering in Technical Entrepreneurship Program at Lehigh University. I’m also an avid product designer, kit maker, author, father, tinkerer, and member of the MAKE Technical Advisory board.