Soldering iron and rope: what they have in common

1. Step 1. Soldering iron — has part — Heating element. A heater.
2. Step 2. Heating element — is part of — Washing machine. A heating element.
3. Step 3. Washing machine — uses — Centrifugal effect. The spin cycle.
4. Step 4. Centrifugal effect — is used in — Sling. The projectile is whirled around.
5. Step 5. Sling — has part — Rope. A strap.

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