This Is The Power Of Friction!

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We know that you have seen a lot of welding these days, but this video is really amazing. It is really interesting to watch it, and we are sure that you will like to click the replay button!
Unfortunately, we don’t have information about what is being made in the following video. Some think that it is some kind of pulley, some claim that it is a truck wheel, but we are still not sure. This machine uses friction to weld the two things together in just few seconds. Do you have any information about what is actually being welded here? Share your experience and opinion with us. Is this thing stronger than the conventional welding? What do you think?