materials-dat/materials-dat.md
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- [[oil-dat]] - [[oil-mineral-dat]]
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+- [[metal-dat]]
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+
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## ref
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materials-dat/metal-dat/metal-dat.md
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-# metal-dat
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+# metal-dat
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+- [[brass-copper-dat]]
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+## metal dust
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+
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+一、从「源头」减少粉尘（最有效）
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+✅ 1️⃣ 选对切割方式（优先级很高）
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+| 切割方式 | 粉尘量 | 说明 |
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+| ------------- | --------- | --------------- |
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+| 冷切锯 / 带锯 | ⭐ 最少 | 切屑是颗粒/条状 |
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+| 手锯（钢锯） | ⭐⭐ 少 | 粉尘不飞 |
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+| 角磨机切割片 | ❌ 多 | 高速产生细粉 |
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+| 砂轮切割 | ❌❌ 非常多 | 粉尘 + 火花 |
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+
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+## easy for cutting
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+
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+| Material | Relative Cutting Ease | Tool Wear | Dust / Chips Produced | Heat Generation | Notes |
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+| --------------- | --------------------- | ---------- | --------------------- | --------------- | -------------------------------------------------- |
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+| Aluminum Alloy | ⭐⭐⭐⭐⭐ (Very Easy) | Low | Chips (few fine dust) | Low–Medium | Soft, cuts easily; may clog blades if RPM too high |
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+| Brass (黄铜) | ⭐⭐⭐⭐☆ (Easy) | Low–Medium | Clean chips | Medium | Free-cutting, stable; less grabbing than aluminum |
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+| Copper (紫铜) | ⭐⭐⭐☆☆ (Medium) | Medium | Long, sticky chips | Medium–High | Very ductile; tends to smear and stick to tools |
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+| Stainless Steel | ⭐⭐☆☆☆ (Hard) | High | Fine chips + dust | High | Tough, work-hardens; needs low speed and coolant |
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