Meat grinder and petri dish: what they have in common

1. Step 1. Meat grinder — has part — Auger. An auger.
2. Step 2. Auger — is part of — Injection moulding. An auger feeds the plastic.
3. Step 3. Injection moulding — is used in — Plastic bottle. Preforms are moulded and then blown.
4. Step 4. Plastic bottle — has part — Pot lid. A polyethylene lid.
5. Step 5. Pot lid — is part of — Petri dish. A cap.

Open Evothings