Cutting Fluid

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

Why It’s Used

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

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

How to Use It

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

Key Idea

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