Homemade clip made of polypropylene pipe

You don’t know where to attach the wheel from an old bicycle, but is it a pity to throw out? Use it to make a grinding machine with a foot drive, which is useful in the garage and home workshop. The emery design is quite simple, so everyone can make it. Of course, the mechanical emery is inferior in performance to the electric "brother", but it has other undeniable advantages: it is almost silent, durable and economical (it does not require electricity to work). Read More