The Misconception Of The Metal Hole Saw
Many people have the wrong idea about many different tools. Many people have a garage full of tools and do not understand their proper use or potential. Others hear of tools and do not understand the value they can provide. The misconception of the metal hole saw is the idea that it is a piece of machinery much like a circular saw. The truth is the metal hole saw is an attachment that is used with a drill. It is inserted in the chuck of a drill and used to cut holes in many different types of materials. This tool is cylindrical in shape, with teeth on the bottom of the cylinder that cut into the surface with ease. The metal hole saw has a pilot twist drill bit in the middle of it that extends a little beyond the rest of this tool. Upon use, the pilot drill bit penetrates the surface first to guide the tool into a precise location. Usually the pilot drill bit penetrates ¼ of an inch before the other part of the tool begins cutting. You can use a metal hole saw to cut holes in materials from ½ of an inch up to 6 inches in diameter. The primary use of this tool is for wood and metal projects; however, there are specially constructed diamond metal hole saws that can be used for concrete and tile. These are rare and very expensive whereas the normal hole saw is relatively inexpensive and easy to find.
Metal hole saws can be bought in a variety of models. There are hole saws that are fixed and cannot be adjusted for different size holes then there are adjustable hole saws that can be used for almost any size hole. The type of hole saw preferred by professionals is the fixed model. You can, however, buy different size fixed models that are interchangeable with the same shaft and pilot bit. Near the shaft that is inserted into a drills chuck, there is a nut that holds the actual cylinder with the cutting teeth to the shaft. If you take this nut off, the cylinder comes off and then you have two parts, the shaft and the cylinder. With this shaft you can purchase other cylinders of different sizes that will attach to this shaft and function correctly. Professionals tend to prefer this model as opposed to the adjustable model because of durability. Some professionals have the opinion that the adjustable hole saw will not be as strong as the fixed models. However, if they are not used a lot and there is a need for many different size holes then perhaps the adjustable hole saw is a better choice.
Another tool closely related but not exactly the same is the annular cutter. This tool has other purposes not mentioned in this article. The main difference between the annular cutter and the metal hole saw is that the annular cutter has spiral flutes on the outer edge that make for easier ejection of the chips from the drilling process.
For more tips and information about metal hole saw please visit: annular cutter
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