$fn=64;

// --- Parameters ---
num_segments = 10;       // Number of rigid segments (adjust for total length)
segment_length = 25;     // Length of each rigid segment (mm)
height = 40;             // Total height of the divider (mm)
thickness = 2.4;         // Thickness of the rigid segments (mm)
hinge_thickness = 0.6;   // Thickness of the flexible living hinge (mm)
hinge_length = 1.5;      // Gap between segments for the hinge (mm)
slot_width = 2.8;        // Width of the interlocking slots (mm)

// Small overlap to ensure manifold (watertight) geometry
eps = 0.01; 

union() {
    for(i = [0 : num_segments - 1]) {
        translate([i * (segment_length + hinge_length), 0, 0]) {
            
            // Rigid Segment with Interlocking Slot
            difference() {
                // Main body
                translate([0, -thickness/2, 0])
                    cube([segment_length, thickness, height]);
                
                // Interlocking slot (cuts from the top down to the middle)
                translate([segment_length/2 - slot_width/2, -thickness, height/2])
                    cube([slot_width, thickness*2, height/2 + 1]);
                    
                // V-chamfer at the top to make slotting/interlocking easier
                translate([segment_length/2, 0, height])
                    rotate([0, 45, 0])
                    cube([slot_width*1.5, thickness*3, slot_width*1.5], center=true);
            }
            
            // Flexible Living Hinge
            if (i < num_segments - 1) {
                translate([segment_length - eps, -hinge_thickness/2, 0])
                    cube([hinge_length + 2*eps, hinge_thickness, height]);
            }
        }
    }
}