Tuning fork stem and chisel: what they have in common

1. Step 1. Tuning fork stem — is part of — Tuning fork. A holder.
2. Step 2. Tuning fork — is made of — Iron. A tuning fork is a steel or iron fork.
3. Step 3. Iron — is material for — Hand plane. The blade is iron.
4. Step 4. Hand plane — has part — Chisel. A plane’s blade is a chisel held in a stock.

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