Materials Needed:
1. Screw extractor set (with various sizes)
2. Drill
3. Drill bits (smaller than the screw size)
4. Safety glasses
5. Pliers
6. Penetrating lubricant
7. Hammer (optional)
Instructions:
Step 1: Safety Precautions
- Put on safety glasses to protect your eyes.
- Ensure the workpiece is securely fastened or clamped to prevent any movement.
Step 2: Prepare the Broken Screw
- Clean the area around the broken screw to ensure good visibility and access.
- Apply penetrating lubricant to the screw and let it sit for a few minutes. This will help loosen the screw and make it easier to remove.
Step 3: Select the Correct Extractor
- Based on the broken screw's size, choose an extractor that fits snugly into the screw's head. If unsure about the size, start with a smaller extractor and gradually move up to a larger one if necessary.
Step 4: Drill a Pilot Hole
- Using a drill bit slightly smaller than the extractor, make a pilot hole in the center of the broken screw. Drill to a depth that matches the length of the extractor.
Step 5: Tap the Extractor (Optional)
- Lightly tap the extractor into the pilot hole using a hammer. This helps ensure the extractor is firmly seated in the screw.
Step 6: Turn Counterclockwise
- Attach the extractor to the drill and turn it counterclockwise at a low speed. This direction will help engage the extractor's teeth with the broken screw.
Step 7: Extract the Screw
- As the drill turns counterclockwise, the extractor should bite into the screw and start to loosen it. Continue turning the extractor until the broken screw comes out completely.
Step 8: Clean Up
- Once the broken screw is removed, use pliers to remove the extractor.
- Clean any remaining lubricant and debris from the workpiece.
Tips for Successful Screw Removal:
- Apply steady and consistent pressure while drilling and extracting.
- If extracting the screw doesn't work immediately, try using a larger extractor or lubricating again.
- Be careful not to apply too much force, as this might damage the workpiece or cause the extractor to break.
- For stubborn screws, you may need to heat the area around the screw to help loosen it. Use a heat gun or soldering iron for this purpose.
Remember that extractor sets come in different sizes and variations. If the broken screw is located in a tight space, you might need a specialty extractor designed for such situations. Always err on the side of caution and carefully read the instructions provided with your extractor set to avoid any potential damage.
