u/Great_Sprinkles_8928

Hi all, I've been lurking a while and love the sub! I am working on this cuff bracelet where the center piece is very thick and then surrounded by 2 other pieces all soldered onto one back plate. I tried to swest solder it all at once, my smith little torch is not getting hot enough to melt medium solder I'm assuming because it is such a large piece. I do have access to a larger but still light duty oxy acetylene torch. I also have a mapp gas torch I was considering....

Should I solder the bigger center piece on first or should I still try to solder it all at once?

Thank you so much for any help or advice you can give!