Society of Glass Technology · [Sheffield] · leaf 161
. The slip is 2^oured through thefunnels and a goodhead of slip provided.If the mould and slipmixture are in theright condition, afairly good castingmay be obtained froma mould of this class,but there are limita-tions. It is very diffi-cult to get the corecast ujD, and itappears impossible toget… … PREPARATION OF RAW MATERIALS FOR GLASS-HOUSE POTS. 85 difficulties encountered in casting a thick piece. If the speci-men had been cast solid, there would still remain a greatdifference in density between the centre and the sides, theconsequences of which v^^ill be obvious. The defect can…
Glass
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