This self-led session is designed to take approximately one hour.

Part 1: What Is a Power Grinder?

A power grinder is a handheld tool used for grinding, cutting, or polishing metal, wood, and

other materials. Most commonly, you'll encounter an angle grinder in the workshop.

Part 2: Vocabulary Match

Match the word to its correct definition.

Term Definition Letter

1. Guard ___

2. Disc/Wheel ___

3. Trigger/Switch ___

4. Flange Nut ___

5. Spindle Lock ___

Definitions:

A. The rotating part that holds the grinding disc in place

B. Covers part of the disc to protect from sparks and debris

C. The part that starts/stops the tool

D. Used to secure the disc tightly

E. The attachment used for grinding, cutting, or sanding

quize

Part 4: Label the parts.

• Trigger Handle

• Tool Reset

• Idle Handle

• Safety Guard

• Trigger

• Motor Housing

• Grinding Wheel

Power Grinder Safety Rules

✅ Before Use

1. Inspect the grinder and disc

o Check for cracks, warping, or wear on the disc.

o Ensure the grinder is clean, dry, and undamaged.

2. Wear proper PPE

o Safety goggles or a full face shield (eye protection is essential).

o Hearing protection (grinders are loud).

o Gloves (anti-vibration recommended).

o Long sleeves and pants (to protect against sparks/debris).

3. Check the tool rating

o Match the disc speed rating with the grinder's RPM.

o Never exceed disc limitations.

4. Ensure guard is in place

o Never remove or bypass the protective guard.

⚠️ While Using

5. Hold with both hands

o Use side handle and main grip for stability and control.

6. Keep firm footing

o Work on a clean, dry, and non-slip surface.

7. Avoid grinding near flammables

o Sparks can ignite flammable materials, vapors, or liquids.

8. Don’t force the tool

o Let the grinder do the work. Too much pressure can cause kickback.

9. Maintain correct angle

o Typically 15°–30° for grinding, flat for sanding.

� After Use

10. Turn off and unplug

o Always disconnect power before changing discs or cleaning.

11. Let disc come to a complete stop. Never set the grinder down while the disc is still

spinning.

12. Store safely. Place in a dry, secure area away from dust and moisture.