# Cutting Fluid

Cutting fluid is a lubricant used during drilling and tapping to reduce friction and heat.

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</div>## Why It’s Used

- Reduces heat buildup
- Lowers friction on tools
- Helps produce cleaner threads
- Extends drill and tap life

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</div>## When to Use It

- Tapping aluminum (10-32, 1/4-20)
- Drilling larger or deep holes
- When tools start to feel hot or resist cutting

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</div>## How to Use It

- Apply a small amount to the hole or tool
- Reapply if needed during cutting
- Keep it light—don’t overuse

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</div>## Key Idea

Cutting fluid makes drilling and tapping easier and safer by reducing heat and friction, especially in aluminum.