4. Self-guided lesson: Power Grinder.
4. Self-guided lesson: Power Grinder.
Welcome to Carpentry
Lesson Plan: Week 1 - Welcome to Carpentry (6 Hours)
Lesson Plan: Week 1 - Welcome to Carpentry (6 Hours)
Lesson Plan Document: Week 2 - Measure Twice, Cut Once (6 Hours)
Lesson Plan Document: Week 2 - Measure Twice, Cut Once (6 Hours)
Lesson Plan Document: Week 3 - Introduction to Hand Tools.
Lesson Plan Document: Week 3 - Introduction to Hand Tools.
Lesson Plan Document: Week 4 - Introduction to Power Tools.
Lesson Plan Document: Week 4 - Introduction to Power Tools.
Lesson Plan Document: Week 5 - Introduction to Wood Types.
Lesson Plan Document: Week 5 - Introduction to Wood Types.
Lesson Plan Document: Week 6 – Fasteners and Joinery.
Lesson Plan Document: Week 6 – Fasteners and Joinery.
Lesson Plan Document: Week 7 – Blueprint Reading & Design.
Lesson Plan Document: Week 7 – Blueprint Reading & Design.
Lesson Plan Document: Week 8 – Framing Basics.
Lesson Plan Document: Week 8 – Framing Basics.
Lesson Plan Document: Week 9 – Finish Carpentry.
Lesson Plan Document: Week 9 – Finish Carpentry.
Week 10 - Final Carpentry Project: Build a Small Bench with Shelf
Week 10 - Final Carpentry Project: Build a Small Bench with Shelf
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.