The following two are about identifying the important process variables and optimising processes accordingly.
Residual wax in lost-wax shells on casting quality => best optimisation
"Crust" formed by 50Ni50Cr melts - limiting the problems it causes
In next two cases, costly and troublesome environmental equipment was avoided by eliminating the initial problem.
Eliminating dust emission by tool selection at lost-wax foundry knock-out
Eliminating smoke emission by system-of-work for l-w shell prefire
Fabricating a tool needed for safe working in minutes
New hot casting lifting tool fabricated in minutes
Clear-thinking production data analysis rapidly suggests astonishing goal for process scrap-rate
Analysis of production data regarding scrap-rate