"JJ" wrote: (clip) Would the rosebud be better? Would another size tip be better than the #0? ^^^^^^^^^^^ In sweating copper pipe, the object is to bring the entire joint up to temperature evenly. A #0 tip probably puts out plenty of heat, but in a small concentrated flame, so you would have to keep it moving constantly, and turning the torch to come in from all sides. From your questions, I assume you haven't done this before, and you will be making it harder than necessary. The rosebud produces a softer, wider flame, so you are not as challenged to get the heat even. A still better choice,though not necessary, would be one of those double tips, that heats from both sides at the same time.
I'm not sure whether a #0 or #1 would be better.