openscad base plate for slider potentiometer mixer

openscad for mixer
// --- Locked Dimensions ---
slit_w = 1.4;
pot_l = 82.6;
pot_w = 12.2;
hole_dist = 80.0;

// --- Plate Settings ---
num_slots = 5;
spacing = 22.0;
slit_l = 60.0;
plate_thick = 1.5; // Updated to 1.5mm
eps = 0.1; // Smaller epsilon for a thinner plate

// --- Bevel & Hole Settings ---
outer_bevel = 0.8; // Smaller bevel to suit 1.5mm thickness
slit_bevel = 0.5; // Subtle bevel for the 1.4mm slit
m3_dia = 3.2;

// --- Calculated Plate Size ---
plate_w = ((num_slots - 1) * spacing) + pot_w + 6;
plate_l = hole_dist + 10;

difference() {
// 1. The Main Flat Plate
cube([plate_w, plate_l, plate_thick], center=true);

// 2. The 5 Slots and Mounting Holesfor (i = [0 : num_slots - 1]) {    translate([(i - (num_slots - 1) / 2) * spacing, 0, 0]) {        // The 1.4mm Slit        cube([slit_w, slit_l, plate_thick + eps], center=true);        // Bevel cutouts for the slit        translate([0, 0, plate_thick/2])            rotate([0, 45, 0]) cube([slit_bevel * 1.41, slit_l, slit_bevel * 1.41], center=true);        translate([0, 0, plate_thick/2])            rotate([0, -45, 0]) cube([slit_bevel * 1.41, slit_l, slit_bevel * 1.41], center=true);        // M3 Mounting Holes        translate([0, hole_dist/2, 0])             cylinder(d=m3_dia, h=plate_thick + eps, center=true, $fn=24);        translate([0, -hole_dist/2, 0])             cylinder(d=m3_dia, h=plate_thick + eps, center=true, $fn=24);    }}// 3. Outer Edge Bevelsfor(x = [-plate_w/2, plate_w/2])    translate([x, 0, plate_thick/2]) rotate([0, 45, 0])         cube([outer_bevel * 1.41, plate_l + eps, outer_bevel * 1.41], center=true);for(y = [-plate_l/2, plate_l/2])    translate([0, y, plate_thick/2]) rotate([45, 0, 0])         cube([plate_w + eps, outer_bevel * 1.41, outer_bevel * 1.41], center=true);

}