// Stomp Rocket Body
// Units mm g s 

$fa = 1;
$fs = 0.5;


module rocket_body(
    inner_radius = 17.5/2, 
    body_length = 150,
    collar_length = 3, 
    top_thickness = 1,
    wall_thickness = 1.8
    ) {
    outer_diameter = inner_radius + wall_thickness;
    sleeve_diameter = inner_radius + 0.4;

    union() {
        cylinder(h=top_thickness, r=outer_diameter);
        difference() {
            cylinder(h=body_length, r=outer_diameter);
            cylinder(h=body_length-collar_length, r=sleeve_diameter);
            translate([0,0,body_length-collar_length-.1])
            cylinder(h=collar_length+.2, r=inner_radius);
        }
    }
}

rocket_body();