It's safe to drink water boiled in this glass IF no poisons have ever been put in the glassware. Borosilicate is the glass originally used to make Pyrex cookware--in Europe they still use it, but in...
By "solder" I'm presuming you mean to join using melted metal, typically for electrical conductivity (as in soldering components on a circuit board).Since plastics, as a rule, do not conduct...