Using this homemade ballerina, you can cut round holes of different diameters or circles in the blanks of wood, plywood, particleboard, MDF and other materials. In this case, the tool can be made from ordinary bolts and nuts.
It should also be noted that a home-made ballerina of this design is more suitable for a drilling machine than for an electric drill. The fact is that without a center drill it will be difficult to make a large round hole.
And the first thing you need to cut off two blanks of different lengths. The master took the pin of a suitable diameter as the basis, but you can also use a long bolt. Only it will be necessary to cut off the hat.
The main stages of work
In a long segment of the stud, it will be necessary to cut through the grinder a longitudinal groove along its entire length. Since the stud will have to be fixed securely in a vice, you need to use plywood or wood linings so as not to damage the thread.
At the next stage, it is necessary to drill a hole in the nut and cut the thread in it. Then the nut must be screwed onto the stud with a groove and secured with a locking screw without a cap (under the hexagon).
Next, it will be necessary to weld a short one at a right angle to a long hairpin. Then the cutting element is made. At the last stage, the assembly of a homemade device is performed.
For details on how to make a ballerina for a drilling machine from ordinary bolts and nuts, see the video on the website.
