Great job
I have 50 nipples i bought on ebay. I am hoping to get something built while I am in the Philippines for the 3 1/2 days that bernie can use as a prototype.
I am going to use pipe feeders as well. Our chicken population is going to explode by Christmas
Take note in the required thread size. I had to hunt about my tool box for a healthy 9mm drill bit, 8.5 was too tight, 9.5mm leaked.
Not sure on the imperial size if that's what you prefer to work with.