Crossword puzzle clue "toughen by heating as glass"

Here are the possible solutions for toughen by heating as glass clue

Answer
Clue
Relevancy
anneal
Clue
Toughen by heating, as glass
Toughen, as glass
Toughen, as glass or steel
Toughen glass
Toughen
Toughen, as steel
Treat with heat to toughen
Definition
to make (as steel or glass) less brittle by heating and then cooling
aman
Clue
Make -- out of (toughen up)

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