Sandpaper and lathe: what they have in common

1. Step 1. Sandpaper — is made of — Abrasive. An abrasive.
2. Step 2. Abrasive — is used in — Waterjet cutting. An abrasive.
3. Step 3. Waterjet cutting — uses — CNC machine. CNC.
4. Step 4. CNC machine — has part — Lead screw. Ball screws move the tables.
5. Step 5. Lead screw — is part of — Screw-cutting lathe. The lead screw moves the cutting tool.
6. Step 6. Screw-cutting lathe — evolved from — Lathe. Maudslay added a lead screw and a slide rest.

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