I just wanted to tell you about a repair that I made that I probably never would have even attempted without your SSF-6 Silver Solder. I have attached some before and after photos.
My customer sent me a cast iron body carburetor to repair that had a piece broken out of the casting at the threaded hole where the inlet fitting screws into. It was a 1/8 NPT fitting, and someone had just tightened it too much and broke the casting. The broken piece was long gone. Someone had previously tried fixing it with epoxy, but it had ultimately failed.
I clamped the casting into a large vise to act as a heat sink, and using a #3 torch tip, built up the area with SSF-6. After cooling for about 2 minutes, I carefully unscrewed the bolt. It had left almost a perfect set of threads in the SSF-6.