 At the time of Geissler's enrolment in 1945, ECA possessed a single glass engraving lathe that overheated, which allowed only intermittent and unreliable access, and had to be shared in shifts with Monro’s other student, Harold Gordon.This inconvenience was compounded by the official regulation preventing students from working in the evenings.Acquisition of a glass engraving lathe from Germany in 1947 finally enabled Geissler to work independently from home.