This morning I decided to clean out my metal cabinet, and found at the back an old bag of borax powder. Further investigation revealed this to actually be chrystals rather than a powder. I always thought that it would be possible to just make a paste by adding the borax to water, but it stayed as chrystals in hot or cold water. Is this product past its use by date, or should I try grinding the chrystals into a finer powder to make the paste? Before I use it to put a healthy shine in the bathroom, can I use it for soldering?
Thanks
Les
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