Trombone with Moving Slide

This complex model is a trombone; the slide moves just like a real one! I play the trombone, couldn’t find a nice origami trombone design with a moving slide; so I designed this one! This is the first time I’ve taught it. I will hand out copies of the crease pattern for both the slide and the trombone in the class.
Please attend this class only if you are a very serious and experienced complex/super complex level folder.