Preparing for all-grain full boils, I realized that my two-stage chiller is not enough efficient. It was made of 3/8" copper tube (20' coil in a bucket with ice and water, and another 20' coil in wort) could bring the temperature down to 75F in 15 minutes, but it was only 2.5 gallons. Also, I made it in Texas where the tap water was always warm, and now I live in Georgia - also not a North pole, but the water is way cooler here. So I decided to connect two coils, and added three 1/2" pipes with driled holes to make it more rigid. The pipes on top are connected with 90s and short lengths of the same pipe, makes sort of a handle The credit for using these drilled pipes belongs to jun; I saw his chiller here. And I have to admit, installing these pipes is a real PITA! This is how it looks, ready for my first AG brew next month, right after the pay check comes in