Experimental Glass Blowing for Boys

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. Take the tube out of the flame, bend it into any shape you Wish (fig. And allow it to cool. Do you find that the glass hardens when it cools and retains the bent shape? Heat the tube near the first bend, turn it cons...