Just a cautionary note here as you proceed down the well worn, if not well illuminated path toward alcohol distillation. While glass is a wonderful idea as a material, I would caution you against using pieces of unknown origin if you are distilling for consumption. "Virgin" glass is harder to come by, but can you be sure that the stuff you bought from an online auction wasn't used to process heavy metals, or toxic organic chemicals? Even though your intent may be to poision yourself anyway (slowly and incompletely), I maintain that it is better to be hung over than dead... just my opinion. Plumbing supplies are generally cheaper and more readily available. Just be sure not to use things like lead solder etc. when you put them together, and build with new materials. I'm really not this prudish on the subject of alcohol, but the possible ramifications of using a tainted still need to be addressed.