I had to add a tap (angle stop) to a cold water line in the basement to add filtered water for the inhabitants (fish). The plan was to split the line after the ice maker tap , insert my Tee and Angle Stop. Splitting the line (pipe cutter) went fine, but the space was too tight to get my Tee in place. Attempts to shorten the pipe were fruitless, as the Pipe Cutter kept corkscrewing (don't own a stubby). So I took the pipe off at the nearest elbow, and installed new elbow, replaced short pipe, new Tee, new short pipe and Angle Stop. I'm glad I bought a few spare parts (besides the Tee) in the event something unforeseen happened. :)
Sorry for the long preamble. So I sanded, deburred and fluxxed all the parts and put them in place. Soldering seemed to go OK, although it was a little slow (Propane) to flow around the joints and does not look overly shiny. I really wanted to take the Angle Stop apart before soldering it, to avoid damaging the bushing. But without a vice, I didn't bother.
The good news is that there are no leaks, but does this mean I'm safe? Can a cold joint not leak, but blow off later? Will I wake up swimmin with the Fishies. LOL.