What does welding use to join metal parts?

High heat to melt the parts together.

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  1. High heat to melt the parts together ✔
  2. Glue to stick the parts together
  3. Water to soften the parts together

Why: Welding joins materials by melting the parts with high temperatures, then letting them cool and fuse.

Huh, didn't know that: Welding joins materials by melting the parts with high temperatures, then letting them cool and fuse.

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References

Answer: High heat to melt the parts together. Welding joins materials by melting the parts with high temperatures, then letting them cool and fuse.

  1. Welding en.wikipedia.org/wiki/Welding
    joins materials, usually metals or thermoplastics, primarily by using high temperatures to melt the parts together
    Checked 2026-11-07.

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