Make a smith's hammer or a mallet lift slowly and strike fast, with a small rebound

A worker who swings a hammer with the same smooth up-and-down motion as a pendulum looks like a metronome, and nobody believes the hit. The impact needs a very different speed from the lift, and the exact moment of the blow must be known so sound and sparks can be matched. This entry gives a curve with these properties.

Why this works

A blow feels strong when the energy is gathered slowly and released in a short burst. The eye reads force from the contrast between the long build-up and the sudden fall, so a smooth wave that treats both halves alike always looks weak and floaty.

When not to use it

Wrong for gentle or tiring work, like sanding, stirring, rowing or sawing, where the motion is even and the effort is steady. A hard strike there would look comic. Use a plain back-and-forth wave instead.

In the full entry

• What to build, step by step
• Starting values and the reason for each
• 3 common mistakes and the fix
• 19 lines of example code with 4 checks that pass
• How your AI shows you that it works

Say this to your AI

Use the Spielerando entry "Make a smith's hammer or a mallet lift slowly and strike fast, with a small rebound" (read_entry smith-hammer-swing-lifts-slowly-and-strikes-fast) in my game. Build it step by step, and show me how you checked that it works.

Or skip this and connect the MCP: your AI then finds all of this by itself.Connect the MCP