Show MOLDING 31 SANDS teel stee molding sand is a white while or wish clean quartz sand high in bilica tilica it has no bond and in order 1 make a mold with it a small nel of fire clay molasses water i her Ma material teral is added tor for binder me ie of the sand band grain varie 1 the av work ric to ile be done iron molding sand or foundry sand icus sandy material used in adde for making molds and for casting molten iron it is v 01 ol some acome shade of brown may riven loamy or sandy fine orp grained and has strong bond n moist from to 5 tons is used annually arans molding sand includes sand d r for molding brass bronze and minum this ts Is a very fine graid ith ii strong ana bo bond nd which 1 I 1 e barp detailed impressions impressio n s w 1111 a surface su to tile the casti cast castlar lap mount or of molding saud sand rise used tin in to nearly tol loi united states geological 5 vey acy |