Homemade pneumatics
Homemade from our reader Alexander, who has his own group vkontakte, dedicated to home-made. Come, see, there are many interesting things in it. 
Description of homemade pneumatics: I sat there in the evening, there was nothing to do, and suddenly in my head an idea was formed of pneumatics. I climbed into the Internet I did not find anything that I could not find anywhere, but I had to buy it because of the time of day, I could not do it. Okay, turned on the brain began to sort out the options well that is in pneumatics, well, the camera with compressed air looked for an empty balloon from the air freshener now it must be pumped air cut from the old camera nipple, with a scissors in the bottom of the balloon made a hole and put the nipple there, super glue and left to dry, now you need some kind of a valve. Here's a headache with it. 1.5 hours. Well, there's nothing like it at home, and here I got a syringe for 3 cube / cm, cut about 1.5cm from the tip of the spout (where the needle is put) and after another 1 cm cut the hole in the case where he stuck a piece of an unknown hose and then pasted it all into the side of the cylinder. Now the easiest trunk, I just had it from a toy pestle. This miracle shoots like this: we lower the piston of the syringe below the opening in its casing, we pump the balloon with a standard pump for about 4 cubes / cm, pull the barrel out of the hose, insert the projectile there (I use plastic pellets from toy pistols) insert back sharply raise and lower the plunger of the syringe, pushes the bullet. Enough for 5 6 shots, what about the power then the old cassette with 3 meters smashes. Strictly do not judge the first time if something is incomprehensible then write everything I explain. 
