The cutting edge of drills, which are used to drill holes for metal, is most often subject to wear during operation. However, each time to buy a new tip - it is impractical. It is much easier and cheaper to “refresh” the sharpening of the drill with an emery machine or with the help of a grinder.
Some masters use special devices made by themselves for this, others restore the cutting edge of the drill by eye. However, in both cases it is necessary to verify the correctness of the sharpening angles. And this will require a template. "Accessories" for its manufacture can be found in any workshop or garage.
Materials and milestones
To make a homemade template for checking the correctness of the sharpening angles, you will need two nuts of the same size. They need to grab welding on both sides to get the "eight". Using the grinding disc for the grinder, we carefully clean the places of the welds.
Now you have at hand a simple template with which you can check the sharpening angles of drill bits for metal. Especially this device is useful to those craftsmen who are used to sharpening drills by hand. But for those who use various devices, it also does not hurt.
Using this template, you can check the correctness of sharpening at any time - this is especially important when you need to drill precise holes in different metal workpieces. How to use this template, see the video on the site.
