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I have had no trouble with making groundglasses at
all...I purchased some valve grinding compound from my local auto-accesssories
store (among socket sets and exhaust pipe tailpieces!) for a very reasonable
cost (there's enough for about 100 20 x 24 inch groundglasses, if you catch my
drift!)I stuck the sheet of glass I wanted ground down (3mm windowglass) with
blu-tack to my benchtop, and used another, smaller (credit-card sized) piece of
glass as a polisher. Every so often I'd take it outside and wash it with the
garden hose to see how "ground" it was...but I'm delighted with the results. A
lot easier than some of teh poistings I see here?
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