module servo(w=20,s=40.3,lenght=43,axe=3){
	resolutionCercle=50;
	visDist=7.6;
	rotate([0,180,0])
		translate([0,0,-lenght/2])
			color("gray"){
				difference(){
					union(){
		
						cube(size=[w,s,lenght],center=true);	
						translate([0,s/2,-lenght/2+lenght/20])
							cube(size=[w/2,s/4,lenght/10],center=true);	
						translate([0,0,lenght/2-8])
							cube(size=[w-0.2,s+visDist*2,2.5],center=true);	
						
						
						translate([0,s/4,lenght/2+4]){
							cylinder(r=axe,$fn=resolutionCercle,h=8,center=true);	
						}
						translate([0,s/4,lenght/2+1]){      
							cylinder(d=w-1,$fn=resolutionCercle,h=2,center=true);	
						}
					}
				
					union(){			
						for(i = [[w/2-5,visDist/2+lenght/2,lenght/2-3],[-w/2+5,+visDist/2+lenght/2,,lenght/2-3],[w/2-5,-visDist/2-lenght/2,lenght/2-3],[-w/2+5,-visDist/2-lenght/2,lenght/2-3]]){
								translate(i){										    			
									cylinder(r = 2.5,$fn=resolutionCercle, h = lenght/2, center = true);				
								}
						}
						
					}
				}
			}
	translate([0,10,-10])		
		children();
}

servo();