Dingey, Peter Spear. [from old catalog] · New York, J. Wiley & sons · leaf 37
the core-box for this core, andis parted at H. The core sets into the round prints g.g.; but there are no cope prints, for the reason that it isnot easy to close the cope over the six round projectingcores. In the absence of these cope prints the moulderwill need to take care that the cope bears on… … Iuj. 13 Tool for. laying out Hexagon Nuts JFig. 14. mi^^m i^e^^^^g^ liy. 15. Dry Sand Cores^ C
Patternmaking
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