I epoxy'd a steel 9mm casing to the Madvapes VV circuit POT, so I could feed it through the 1/4" Bocote that I made my box out of. I didn't want to pop the primer, but had to, so I didn't have an expolding accident lol. It was neccessary to cut the casing wall down with a pipe cutter. I filled it with epoxy and then centered it on the pot knob. Works well and looks badazz, too! =)