. Model making; including workshop practice, design and construction of models, a practical treatise for the amateur and professional . COriE PRINT ^^. Figs. 79, 80, 81—^Moulding the of a steam gauge or meter casewith opening on one side only Core prints are those parts of a pattern which formdepressions in the sand mould, these depressions beingused to support a core made of sand or sand and glue,moulded in a wooden ^^core box and baked hard in a^^core oven. When the metal is poured into the mould,it flows around this core and a hole is thus formed in thecasting. The remai
. Model making; including workshop practice, design and construction of models, a practical treatise for the amateur and professional . COriE PRINT ^^. Figs. 79, 80, 81—^Moulding the of a steam gauge or meter casewith opening on one side only Core prints are those parts of a pattern which formdepressions in the sand mould, these depressions beingused to support a core made of sand or sand and glue,moulded in a wooden ^^core box and baked hard in a^^core oven. When the metal is poured into the mould,it flows around this core and a hole is thus formed in thecasting. The remains of the core are removed with thecasting and dug out of the hole. Core prints do notnecessarily have to be of the same size as the hole to be Pattern Making 117 formed in the casting; tlie}^ may be of any shape that willdraw, but the body of the core, allowing a small amountfor shrinkage of the metal, must be the exact size andshape of the hole or other opening required in the the hole is to be cylindrical, the core body must becylindrical; if a square or rectangular core is used, nomatter what the shape of the core prints, the casting will
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Keywords: ., bookcentury1900, bookdecade1910, bookidmodelmakingi, bookyear1919
