Here is a Cow elk call I just finished it is heading for Bc in 3 weeks for elk hunt
The guy wanted a lucky call so I added piece of elk antler on the end from bull I harvested few years back
then I soaked it in some lucky polyurethane 3 coats " should be enough luck " Just sent him photo hope he likes it ..
Oh ya and the tubing is electrical shrink wrap in 3/8"
Repeat..