Society of Glass Technology · [Sheffield] · leaf 215
ure of a head of slip. For this purpose, the slip was poureddown a flexible tube connected to the base of the mould. Afunnel at the further end of the tube was kept supplied with 144 JOURNAL OF THE SOCIETY OF GLASS TECHNOLOGY. material, and could be raised and lowered at will. After filling,the… … Core Mould Fig. 2. ever, soon found that they possessed a tendency to develop a ring-shaped crack around the inside of the bottom, and a section showedthe structure as sketched in Fig. 3. The pot photographed inPlate 3 is an example. The distribution of clay and grog in the sides was fairly…
Glass
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