Hello every one . Good news , I won a battle against one of my meanest enemies , but I can't depend all my life on this victory , because he will try to appose me again and makes my bad life worse , so I need to work always to make him shut up , and for my work I created a collection of gears for many uses today , but this time they are STL format for 3D printing , I also made them in bianery because I heared that bianery requires less 3D printing machine's cabapilty .