Machine bed and joystick: what they have in common

1. Step 1. Machine bed — is part of — Lathe. A rigid base with guides.
2. Step 2. Lathe — uses — High-speed steel. Cutting tools.
3. Step 3. High-speed steel — is made of — Tungsten. Tungsten.
4. Step 4. Tungsten — is material for — Vibration motor. The eccentric weight is tungsten.
5. Step 5. Vibration motor — is part of — Gamepad. Vibration.
6. Step 6. Gamepad — evolved from — Joystick. A game controller.

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