How to make a drill from a nail
I will show you how to make a simple drill from an ordinary nail, with which you can drill steel, wood, plastic, etc. Yes, you read that right, with this drill you can drill thick steel about 5 mm. Smarting thing is good, always help out in a difficult life situation. So, to increase the level of self-development, I propose to become familiar with this method. Perhaps useful in life.
Making a metal drill from a nail
We take a nail and grind off the point on his sandpaper. Completely do not need to do this, about half.
Hammer flatten the end under a flat screwdriver.
Next on sandpaper do cutting edges like a drill.
That's how it should turn out.
In principle, the drill is ready, but they can drill only wood, plastic or other soft metals.
Tempering drill - carburizing
To turn a drill into a drill for metal, it must be hardened. For this we need a DC welding machine and a metal jar with crushed graphite.Graphite can be obtained from old brushes by grinding them with a file.
If there is no jar, you can use a piece of flat steel. Connect the positive electrode to the jar, and the negative to the nail.
Turn on the welding machine.
Omit the cutting edge is lower in graphite. As soon as the masa begins to redden, we raise a nail. The main thing is not to burn all that has been carved. Overheating is not necessary, we drive a nail to achieve a small spark. The whole procedure lasts 1-2 minutes.
This method is called cementation. That is, the cutting edge is saturated with carbon, which in turn will add strength.
Further we clamp in a vice and we saw off a hat.
Drill for metal, made of nail, ready!
Go to the tests. Clamp the drill bit in the chuck of a vertical drilling machine.
And we drill a steel corner like an ordinary drill, periodically sprinkling grease.
Give a second try.
The outlet is drilled no worse than a conventional drill.
Now the task is more difficult - to check the stainless steel. It is known that this is not just done.
Also drill with grease.
A bit more.
Of course, the strength of such a drill for a long time is not enough. If you drill a tree, then in principle it will go, but for steel the safety margin is limited to several holes, it all depends on the thickness of the steel.