newbie questions

Hi.  I'm new at soldering/braizing, I'v had about 32 hours of hands on 
instruction - the silver, not me.  And I would appreciate someone pointing

me  toward information that I call:

Questions not answered by Tim McCreight or anybody else that I have found
so 
far.

Where can I find a copper solder that will remain copper colored after 
soldering, and does not have a skull and crossbones on it?

Do I really need a respirator when braizing?  The instructor didn't use
one, 
even when machine poli****ng.

What are the pro****tiions of denatured alcohol to borax (boric acid
powder) 
I use for a flux, and why do I have to keep it in a completely glass 
container?

Thanks in advance.

Vicki 


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