<html><body><div style="color: rgb(0, 0, 0); font-family: arial, helvetica, sans-serif; font-size: 12pt;"><div abp="2011"><br abp="2012">- Have you looked at a bulkhead fitting through the cap? </div><div abp="2011"> </div><div abp="2011"> Bulkhead fittings. So that's what those are called. I have been looking for those for 40 years, manufacturing them out of toggle switches and other oddities, as a way of smoothing the edges of the hole in the center of the bottom of a metal washtub, when you turn it into a bass, to keep the thin edge from sawing through the string. And now that I know what they're called and can afford them, I'll probably never need one again.</div></div></body></html>