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Blind holes are holes that do not fully penetrate a material and are used to hide fasteners and create a smooth surface. They are commonly used in woodworking and medical equipment to eliminate safety risks. Blind holes can vary in depth and width and may require special measures for reinforcement. Disassembling items made with blind holes can be difficult, but removable sheaths or covers may provide access to fasteners.
A blind hole is a hole that does not fully penetrate a material, such as wood or plastic, stopping short of the opposite side. These holes are used for a variety of components and perform a variety of functions. More simply, the blind hole design is useful for hiding fasteners and creating a visually appealing smooth even surface. Equipment designed to create blind holes can be used to make them, and people can also drill, ream, or use other tools to create them, using careful control to avoid drilling into the other side.
One place the blind hole is commonly seen is in woodworking. People often want to hide fasteners like anchor pegs and screws because they are not attractive to look at. Additionally, exposed fasteners can create a binding point for fabric and other materials as well as collect dirt and dust. The knockout hole allows people to hide a fastener in the assembly of a product such as a desk or table. Using this construction technique tends to increase costs, but will result in a more aesthetically pleasing final product.
For some types of equipment, blind holes are required to keep the surface of the equipment uniform. Medical equipment, for example, must be easy to sterilize. Places such as screw and bolt heads can be difficult to clean thoroughly and can create a collection point for bacteria and other unwanted organisms, allowing equipment to transfer infectious materials between patients. Blind holes eliminate this safety risk.
Blind holes can vary in depth and width depending on how they are created. A blind hole can be lined with materials such as bolt sleeves and other fasteners, and can also be used with glue and pegs or other components. When designing objects built with hidden fasteners, people need to consider the load on those fasteners and develop appropriate measures to help them resist snags and tears. This may include reinforcing the holes and using special glues.
When people need to disassemble something made with blind holes for repair or maintenance it can be difficult, as it is hard to find the fixings and not being able to see them, people can’t see what they are doing when they disassemble the item. In some cases, it may not be possible to disassemble the item and in others, people should follow directions provided, if available, very carefully to limit the chances of damaging the item during disassembly. If no indications can be found, people should look for sheaths or covers that may be removable, providing access to fasteners and other components.
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