Fillet brazing.
https://youtu.be/37yn9gxk8AI
https://farm1.staticflickr.com/785/2...a2a69fed_z.jpg
https://farm1.staticflickr.com/892/4...3c980968_z.jpg
https://farm1.staticflickr.com/787/2...eddee495_z.jpg
https://farm1.staticflickr.com/866/4...b3ab2b9b_z.jpg
https://farm1.staticflickr.com/870/4...7917ca56_z.jpg
Thanks! NATE