Shell Moulding Process
http://thelibraryofmanufacturing.com/shell_mold_casting.html
From a Handbook
https://books.google.co.in/books?id=tMK6lummtq8C&pg=PA928#v=onepage&q&f=false
Comparison of Metal Casting Processes
http://www.engineershandbook.com/Tables/castchart.htm Link not working
The Shell Moulding Process: A German Innovation U. Recknagel
To mark the 50th anniversary of the death of the inventor Johannes Croning
The inventor and entrepreneur
Johannes Carl Adolf Croning was born on May 22, 1886, in
Hamburg as the son of a tradesman.
http://www.ha-international.com/pdf/CroningShellMoulding.pdf
A patent for Jonannes Croning
https://patents.google.com/patent/US1966615A/en
Updated on 12 August 2019, 9 .9.2013
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