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 163
ed all at once in a long strip. We place the i)ieces in pairs, and mark on each pair a cir- cle a little larger than the required finished size of flange. We then fix each pair to the chuck, with the planed faces against the chuck, and the planed edges placed in con- tact, their joint coming… … suitable <;ore box, the other half being exactly the same, with the exception that the position of the internal parti- tion is reversed. To get out this core box, we plane up
Patternmaking
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.