Do not throw away a wheel from a bicycle that has become unusable - you can make a simple center punch yourself, which can be useful in a home workshop or garage from an old bicycle hub. The design of the device is so primitive that everyone will understand.
The first step is to free the bicycle hub from the spokes. To do this, you can use either scissors for metal, or good nippers. In extreme cases, a hammer with a chisel will do. True, in this case you have to tinker a bit longer.
After that we take out the axis and with the help of the grinder we cut off part of the body on one side. Also, to make a home-made punch, you will need an old automobile valve and a small piece of spring. The valve must first be pointed at the end and hardened.
The main stages of work
We insert a car valve into the body of the bicycle hub, and from the opposite side we need to weld a regular nut to the valve "body". Thus, a spring punch turned out, which in some situations is more practical than the classic version of the tool.
The spring in this case dampens the vibration, which gives out on the fingers upon impact. The sleeve acts as a guide. In principle, this is not particularly important, but it certainly will not be worse. Also, the "hat" of the bicycle sleeve will protect against hammer blows on your fingers if you suddenly miss.
Details on how to make a simple center punch from an old bicycle sleeve with your own hands can be found in the video on the website.
