September 24th, 2011 WorkshopNovember 16, 2011Student cutting the jack lineBy Minna Koistinen Previous Waiting for glass to cool down Next MInna Koistinen instructs student in glass shaping Related Posts Heating up glass in the glory hole November 16, 2011 Coloured glass frits are used to add colour to clear molten glass November 16, 2011 Taking the glass paperweight off of the pontil rod at the crack-off bench November 16, 2011 Minna and Andrea assist a student creating a glass ornament November 16, 2011