Handy little pollinic it is easy to make your own. You will need to segment blade bars of an agricultural mower. If you add the steel plate 2 mm thick — get a bilateral instrument, before whom none can resist the weed. Both blades connected by screws, fasten the screw to the handle of a metal tube, inside which is inserted a wooden rod.
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To drive in many modern pneumatic machines and tools required compressed air pressure of 3-4 ATM. Is it possible to build a mechanism which effectively would have used a pressure...