I know Brian built his last night, and I just built mine today. Anyway, I documented the process I did with some pointers from Brian according to his experience last night. If you are interested in building one too, I put the instructions up on my website. Here is the link. http://barleypopmaker.info/2012/10/10/brewing-project-build-a-counterflow-chiller-no-solder-method/ I do not have soldering equipment and didn’t buy any, I purchased the copper bond epoxy, Brian soldered his. But other than that our process was very similar. Below are both versions.