button_b = 6;
button_t = 4.5;

module trigger_button_small (){
	translate([0,0,0])cylinder(r=button_b/2, h=1, center=true, $fn=100);
	translate([0,0,(15+1)/2])cylinder(r=button_t/2, h=15, center=true, $fn=100);
}

trigger_button_small();