How To Get A Broken Screw Out

How to Get a Broken Screw Out: A Comprehensive Guide

Dealing with a broken screw is frustrating, especially when you're in the middle of a project. Whether it's a stripped screw head in your furniture or a snapped bolt in your car engine, knowing how to remove it efficiently is crucial. This guide provides several methods to get that stubborn broken screw out, from simple techniques to more advanced solutions. We'll cover everything from preventative measures to advanced tool usage, ensuring you're equipped to handle any broken screw situation.

Understanding the Problem: Why Screws Break

Before diving into removal techniques, let's briefly understand why screws break. Common causes include:

• Over-tightening: Applying excessive force when screwing in can easily strip the head or snap the screw.
• Stripped screw heads: Using the wrong size screwdriver or applying too much pressure can damage the screw head, making removal difficult.
• Corrosion: Rust and corrosion weaken the screw, making it brittle and prone to breakage.
• Material fatigue: Repeated stress on a screw can eventually lead to failure.

Simple Solutions: For Slightly Damaged Screws

If the screw head is slightly damaged but still somewhat intact, these methods might work:

• Use the Right Screwdriver: This sounds obvious, but ensuring you have the correct size and type of screwdriver (Phillips, flathead, Torx, etc.) is paramount. A poorly fitting screwdriver will only worsen the damage.
• Apply Pressure and Grip: Sometimes, a firm grip and slow, steady pressure can be enough to remove a slightly loose screw.
• Penetrating Oil: Apply a penetrating oil like WD-40 to the screw to loosen it and help break down any rust or corrosion. Let it sit for a few minutes before attempting removal.
• Rubber Band Trick: Place a rubber band over the screw head and then position your screwdriver on top. The rubber band increases friction and grip, providing better leverage.

Advanced Techniques: For Severely Damaged Screws

For severely damaged or broken screws, you'll need more advanced tools and techniques:

• Screw Extractor: This specialized tool is designed for removing broken screws. It features a reverse-threaded bit that digs into the broken screw, allowing you to unscrew it. Different sizes are available to match the screw size. Ensure you drill a pilot hole of the correct size before using it.
• Left-Handed Drill Bit: If the screw extractor doesn't work, a left-handed drill bit can be effective. It works by reversing the screw's direction, allowing you to twist it out. Again, drilling a pilot hole carefully is essential.
• Dremel Tool with Cutting Disc: For extremely stubborn screws, a Dremel tool with a cutting disc can be used to carefully cut slots into the screw head, creating a new surface for a flathead screwdriver to grip. Proceed with caution and use safety glasses.
• Hammer and Chisel (Last Resort): As a last resort, you can carefully use a hammer and chisel to gently tap the screw out. This method is risky and can easily damage the surrounding material, so it should only be used as a final option.

Preventative Measures: Avoiding Broken Screws in the Future

Preventing broken screws is far easier than removing them. Here's how:

• Use the Right Tools: Always use the correct size and type of screwdriver for the screw.
• Lubricate: Applying a lubricant like penetrating oil before screwing can make the process smoother and reduce the risk of stripping.
• Don't Overtighten: Tighten screws firmly but avoid excessive force.
• Proper Screw Selection: Use the appropriate screw type and size for the material and application.

By following these methods and preventative measures, you'll be well-equipped to handle any broken screw situation with confidence. Remember to always prioritize safety and use the appropriate tools for the task at hand. Good luck!