Here is a company that sells oversized Simax glass tubes.

http://www.winshipdesigns.com/home/w...rderform/199/0

If you can get these cut this is the way to go if you want to build a bunch of cool tubes. Super cheap.
FERMENTATION Reviewed by FERMENTATION on . I have a question about locating Pyrex tubes. Yes, I have searched. I am looking for Pyrex tubes that are larger than the common bake a rounds that are available everywhere. I would like a 6"-8" diameter and 19"-27" length. I do not want to pay hundreds of dollars for just a tube either (I found those.) I have searched ebay, a plethora of search engines, several forums, and local stores but have seen nothing for a reasonable price. Please, help. FERMENTATION smells like happy me. Mmm mmm good. Rating: 5