$fn=64;

// --- Parameters ---
base_length = 20;
base_width = 12;
base_thickness = 2;
cable_diameter = 6;     // Optimized for 4-7mm cables
wall_thickness = 2.5;
opening_width = 4.5;    // Narrower than cable for snap-fit

// --- Model ---
// Rotate to sit flat on the XY build plate
rotate([90, 0, 0])
linear_extrude(height = base_width, center = true) {
    difference() {
        union() {
            // Flat mounting base
            translate([0, base_thickness / 2])
                square([base_length, base_thickness], center = true);
            
            // Main curved grip body
            translate([0, base_thickness + cable_diameter / 2 - 0.5])
                circle(r = cable_diameter / 2 + wall_thickness);
        }
        
        // Cable channel cutout
        translate([0, base_thickness + cable_diameter / 2 - 0.5])
            circle(r = cable_diameter / 2);
        
        // Top opening and insertion flare for easy cable snap-in
        translate([0, base_thickness + cable_diameter / 2 - 0.5])
            polygon([
                [-opening_width / 2, 1.5],
                [opening_width / 2, 1.5],
                [opening_width / 2, cable_diameter / 2 + 0.5],
                [opening_width / 2 + 2.5, cable_diameter / 2 + wall_thickness + 1],
                [-opening_width / 2 - 2.5, cable_diameter / 2 + wall_thickness + 1],
                [-opening_width / 2, cable_diameter / 2 + 0.5]
            ]);
            
        // Trim the bottom perfectly flat to ensure optimal bed adhesion
        translate([0, -5])
            square([base_length + 10, 10], center = true);
    }
}