Egg piercer

An egg piercer pierces the air pocket of an eggshell with a small needle to keep the shell from cracking during hard-boiling.[1] If both ends of the shell are pierced, the egg can be blown out while preserving the shell (for crafts). Examples of egg piercers from the 19th century exist.

Egg piercer, "push down" variant, pushed down to reveal the pin

See also

References
  1. "What is an Egg Piercer?". wiseGEEK.com. Retrieved 1 December 2012.
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