Greetings to all metal lovers on our channel for self-taught welding and locksmiths. Sometimes it is necessary to make a straight hole in metal. For this, there are various attachments for a drill and other special tools.
But if all this is not at hand, then an even hole can be made and a burned electrode. I will show you exactly how to make even holes without torn edges.
For clarity, I will show this method on 2 parts - a metal plate and a profile pipe. Let's complicate the task a little, the metal plate will be in an upright position, so we will burn through.
We need a hole of a certain diameter. Typically, a hole is needed to cut into the surface of a pipe. We take this pipe or a piece of a similar one with this diameter and trace the pipe on the metal plane with a marking tool. It is advisable to make the markings with a thin line - I work with a chemical pencil on blue metal.
Now we carefully outline this markup with chalk. Why can't you draw chalk around the pipe right away? If you immediately circle the circle with chalk, then the diameter will simply be larger than necessary. A piece of chalk will not fit tightly around the exact outer diameter of the pipe. So you have to do just such operations with the markup.
Now it's time to take welding. Gently repeat the chalk circle with a thin seam. It's easier to make 2 seams in a semicircle. The chalk is clearly visible through the welding mask, we carefully hold the arc along the outer contour of the chalk markings.
So we made a beacon like a side, you can safely increase the current and cut out the metal that is inside our circle from the seam. In the place of the seam, the metal is now thick relative to the inner part, and therefore it will not let the excess burn through - we will not go beyond the contours of the seam. The hole should be straight.
We look at the result on the vertical. The hole burned is pretty accurate. The pipe through which and for which all this was done enters with minimal gaps. It will be very easy to weld such a gap.
The same is with the hole in the profile tube in the lower position. The sleeve also fits into the hole with minimal clearances. It will also be easy to brew such a connection.
That's all, as you have seen, it is quite possible to make an even hole with an electrode with the required diameter. Take welding and locksmith tricks into your arsenal!
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