- ANNEAL
- Strengthen by heating
- Strengthen
- Heat-treat
- Heat and then cool
- Temper
- Temper, as metal
- Toughen, as glass
- Toughen by heating, as glass
- Treat with heat to toughen
- Strengthen, as glass
- Temper, as steel
- Temper, as glass or steel
- Foundry process
- Heat to remove stress from, as glass
- Free from stress by heating, as metal
- Toughen up
- Heat, then cool
- Toughen
- Temper, as titanium
- Temper, as glass
- Toughen, as steel
- Heat and then cool slowly.
- Subject to high heat.
- Temper by heat.
- Temper, as a sword.
- Temper in fire.
- Temper or toughen.
- Heat-treat metals.
- Heat, as glass.
- Heat, as glass, to fix laid-on colors.
- Temper with heat.
- Strengthen and temper
- Toughen glass
- Strengthen by tempering
- Toughen or temper
- Temper steel
- Treat, as glass
- Heat, as to soften metal
- Make malleable using heat
- Heat to remove stress
- Heat to prevent stress
- Fire in a kiln
- Heat and cool, to strengthen
- Toughen, as glass or steel
- Gradually heat and cool to temper
- Toughen, in metallurgy
- Harden as glass
- Heat and then cool, as glass
