Show How to Etch Glass A simple wa way to etch glass gluss is to warm it carefully if heated too rapidly rapid rapid- ly it will crack Rub nub paraffin or beeswax beeswax bees bees- wax over the warm surface o of the glass and then with a blunt Instrument Instrument instrument ment print the desired wording To 10 some calcium fluoride placed In a metal dish add enough concentrated concentrated concentrated con con- sulphuric acid to moisten the powder Place the glass with the marked marke side down over th the metal dish containing the above chemicals and leave It over night In In Inthe the morning scrape crape the paraffin off and the desired desired desired de de- de- de sired words will be etched on the time glass |