ZINC DIECAST

diecast
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A popular manufacturing method is Zinc Diecasting: Alloys of zinc with various small percentages of other metals are heated to melting temperatures and then pumped into a mold under pressure, which they fill before quickly cooling into solid components such as carburetor bodies
lamp parts, bathroom towel bar end supports, blade guards on circular saws, bodies for kitchen mixers, toys like Hot Wheels, kickstands, etc.

Zinc Die Casting
good books
diecasting
on Amazon
or eBay
or AbeBooks
(affil link)
The alloys used are often called Zamac (for Zinc, Aluminum, Magnesium, and Copper) or Zamak. When weight is a major consideration, alloys which are predominantly aluminum can also be diecast. People sometimes call diecast parts "potmetal".

"Finishing and Electroplating Die Cast and Wrought Zinc"
by Safranek & Brooman
safranek_zinc
on Amazon
or eBay
or AbeBooks
(only rarely avail.)
(affil link)
There can be a host of issues involved in properly plating, powder coating, or otherwise finishing diecastings, so such problems are a mainstay of the Q&As on finishing.com.