The pattern maker's assistant : embracing lathe work, branch work, core work, sweep work, and practical gear construction : the preparation and use of tools : together with a large collection of useful and valuable tables (1878)
Rose, Joshua · New York : D. Van Nostrand · leaf 187
turned extra large at the part intended to be fluted, so as to form a plain core print all around the column. A convenient number— divisible by 3 or 4— of flutes must be taken ; we have taken 12 flutes in the half column. A suitable core box must be constructed with, say, four flutes; these cores,… … ' In Fig. 184, each half of the column is formed of three pieces, which are held together by taper dovetails; in this case the middle piece is first drawn from the mold and
Patternmaking
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
