1.) Please start reading the safety forum here. You will decipher what you need from that.
2.) Please start reading the technical forum here, lots of good information in there.
3.) Depends on the COE of the glass used to make the bottle. A search should turn up some info.
4.) See above.
5.) Only you are going to know that after much experimentation.
6.) Look in the sales rack and compare prices. Lots of good vendors there and also some threads steering you clear of bad ones.
Welcome to glass and a lifelong learning curve.
Jen
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