Screw turned round: this is how you unfasten worn screws
- Loosen the loosened screws
- rubber band
Aligned screws. Everyone knows them, only very few people know how to solve them again. If the head of a screw is so worn that it can no longer be unscrewed with the appropriate tool, alternative methods must be used. Simple household items often suffice before you have to use a saw or an angle grinder.
Due to their principle, screws are among the most important fastening materials ever. They can simply be screwed in and out and will not damage the workpiece if properly executed. Nevertheless, it may come to wear due to excessive force or fatigue, which in turn makes the release extremely difficult. Once a screw has worn out, do not turn it further to avoid further damage to the head. How to minimize the effort of loosening the screws. There are several ways to loosen the screws, which vary depending on the degree of wear and the fit of the screws in the material.
Before you can take care of the screws, you must first pay attention to a few things. Above all, it is important that you do not try to loosen the screws with a regular screwdriver. This would sharpen the metal even more and have a negative effect on the stability of the screw head. Many people make the mistake of putting more pressure on the screws, which increases the wear even more. In addition, you should always first try out the variants that do not need a special tool, because often these are sufficient.
Loosen the loosened screws
Believe it or not, a rubber band helps with this misery. The rubber band fills the screw head and protects the drive from further wear, which eliminates the problem. For this method you need a thick rubber band; Here are Einmachgummis, as they are used for preserving jars, proven effective. If you have one available, do the following:
- Take the rubber band and place it with the surface on the screw head
- do not place the rubber band in two layers on the screw head
- This would not grab the screwdriver
- fix the band with your fingers and place the tool directly on the screw head
- Now the rubber band should sit between the screwdriver and the drive
- If you try to use the screwdriver, the rubber band will grip the round ground head
- then loosen the screws
This method is suitable for all screw types, from Torx to Allen profiles. However, it should be noted that very thin slot profiles are somewhat more problematic to solve with this method. This is also true of all screw heads, which are severely worn and where the drive is already almost completely abraded. The clearer the profile of the screws, the easier the tape can grip.
Tip: As an alternative to the rubber band, you can also take some layers of cling film, which you can fold over and place over the head of the screw. If the screwdriver passes through the film, you simply need to use more layers and move the same way as the rubber bands.
Screw extractors are specially designed for loosening out worn screws, but must be previously purchased and used together with other tools. These are usually sets that have bits of different sizes for drills and drill an extra hole or thread into the head of the screw to subsequently loosen the screws. On average, these sets cost between 20 and 30 euros. In addition, you will need:
- Hand drill including twist drills that can be used in metal
- Tap wrench (only required for certain left-handers)
- something to clamp the screws