Instead, you can only sharp them by carving slices off the ends. Luckily, I wound up creating a sort of Middle-Eastern koto-sounding thang, that kind of works. I hope these don’t dull down too much when I mount them.
Miking and amplifying will be a challenge – I’ll need to figure out a resonator or some sort of sound funnel feeding a mike at one end of the tubes. But they resonate deeply, and they’ll look pretty wikkid bolted to the side of the van.
Enjoy the sustain.