Quote:
Originally Posted by G6Tanuki
It's amazing, looking back, what you could easily buy over the counter...
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Absolutely. I remember travelling 20 miles into Birmingham one Saturday morning when I was about fourteen (1967) to a big supplier of chemicals to schools, and buying a pint bottle of concentrated sulphuric acid over the counter. It came in the usual brown fluted-glass bottle marked POISON. I carried it home on the train!
Around the same time, our local chemist was quite happy to sell me benign things like methylated spirits, test tubes, flasks, glass tubing and other laboratory sundries when I was interested in practical chemistry.
There is at least one video on YouTube where a chap successfully demonstrates sharpening files using a 10% solution of drain unblocking fluid, so it does seem to work. I'm glad Jim's found a good use for that left-over battery acid!