fil = 0.25;
w = 31+fil*6;
l = 12;
cls = 6.4;
base_width = 30;
base_height = 15;

// Size of magnets used (plus clearance).
magnet = [20.1+1, 6.1+0.4, 1.6+0.8];

// Glue mount or magnet mount?
magnet_mount = true;

// Clamp.
module clamp (){
    translate([0, fil*6, 0])
        cube([fil*6, fil*6, l]);
    translate([fil*6+2.5, fil*6, 0])
        cube([cls-2.5, fil*8, l]);
    cube([fil*3+cls, fil*6, l]);
}

// Lower clamp.
translate ([0, -fil*4, 0])
    clamp();

// Upper clamp.
translate ([0, w+fil*4, l]) rotate([180, 0, 0])
    clamp();

difference () {
    minkowski () {
        union () {
            // Clamp connection.
            translate([fil*3+cls, -4, 0])
                cube([0.001, w+4+fil, l]);
            // Clamp to base.
            translate([fil*3+cls, -4, 0]) rotate([0, 0, 270])
                cube([0.001, 4, l]);

            // Base.
            translate([fil*3+cls+4, -4, 0]) rotate([0, 0, 345])
            if (magnet_mount) {
                cube([magnet[2], magnet[1]*2, magnet[0]]);
            } else {
                cube([0.001, base_height, base_width]);
            }
        }
        cylinder(0.001, fil*3, fil*3, $fn=64);
    }

    translate([fil*3+cls+4, -4, 0]) rotate([0, 0, 345])
    if (magnet_mount) {
        translate([magnet[2]/2, magnet[1]/2, -0.001])
            cube([magnet[2], magnet[1], magnet[0]+0.002]);
    }
}