How big are we talking about? How big are the things you want to
solder? A friend came over to borrow my torch to solder a sterling
baby spoon together -- I have the same torch set up, Little Torch
with disposable tanks -- and she just turned up the flame so that it
was really, really long and hot, worked fine.
Bigger tanks won't change the situation, it's the tips that control
how big the flame will be. The manufacturers and sellers say you
can't covert to different regulators, recent posts here say it's
okay to do.
If you do buy a new torch, don't throw this one out the window, it's
Chicago area, Illinois, USA
Metalsmith, Certified PMC Instructor
Studio 925; established 1992