Yes, I make them from copper tubing. Material is (relatively) cheap and easy to work with. What I do is very simple. I'll use about 1/2" tubing, cut to about 3/4" inch longer than the guesstimated length I'll need, squash one end in the vice, drill a hole through the flattened end, grind off the sharp corners then measure actual volume. If too much I'll cut or grind the tube shorter. As far as not looking 'right', after one or two uses it is dark and acceptably grungy.