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ELEMENTARY SOLID FORMING DIES
INDEX TO TABLES OF TIME VALUES ETC FOR ESTIMATING
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accurate air hardening allow angle assembly back gage bend blank holder blanking punch block and pad BLOCK—Det breakage clearance holes cold rolled steel combined squaring construction contour counterbored curling CUTOFF AND FORM cutoff punch diameter dimension X drilled drop-through edge ejection eliminate estimating feeding finished flange floater forator form punch Frankford Arsenal grinding hardened tool steel inch inserted knockout layout machined material metal mounted Mounting punch necessary notch opening operation peened perforators permit piece piercing pilot holes pin guards possible prevent production progressive proper punch holder punch pad punch plate quired radius scrap screw and dowel sections set screw shank shape shaving shear shedder shell shoe shoulder side cutters slide slugs Soft Machine solid spring pins spring stripper square station stock thickness stop straight strip struction surface Table tion TOTAL Column trimming TRYOUT units usually values