$fn=64;

// --- Parameters ---
token_diameter = 25.0;      // Diameter of the tokens
token_thickness = 2.0;      // Thickness of a single token
tokens_per_slot = 15;       // Number of tokens per compartment
num_slots = 4;              // Number of compartments
wall_thickness = 2.5;       // Thickness of outer and dividing walls
base_thickness = 2.0;       // Thickness of the bottom base
finger_notch_width = 14.0;  // Width of the vertical finger cutout

// --- Calculated Dimensions ---
well_dia = token_diameter + 1.0; // +1mm for tolerance
well_rad = well_dia / 2;
well_depth = (token_thickness * tokens_per_slot) + 2.0;

holder_length = (well_dia * num_slots) + (wall_thickness * (num_slots + 1));
holder_width = well_dia + (wall_thickness * 2);
holder_height = well_depth + base_thickness;

// --- Model ---
difference() {
    // Main body block
    cube([holder_length, holder_width, holder_height]);
    
    // Subtract compartments and finger cutouts
    for (i = [0 : num_slots - 1]) {
        // Center X position for the current slot
        x_pos = wall_thickness + well_rad + (i * (well_dia + wall_thickness));
        y_pos = holder_width / 2;
        
        // Cylindrical well for stacking tokens
        translate([x_pos, y_pos, base_thickness])
            cylinder(h = well_depth + 1, r = well_rad);
            
        // Vertical finger notch for easy grabbing/pinching
        translate([x_pos - (finger_notch_width / 2), -1, base_thickness])
            cube([finger_notch_width, holder_width + 2, well_depth + 1]);
    }
}