modified version of file

Flat_Actuators.scad

part = "both"; // [first:Mold Only,second:Stencil Only,both:Mold and Stencil]

/* [Parameters] */
// Load a 100x100 pixel image. (images will be automatically stretched to fit) Simple, high contrast images like logos work best.
Image = "soft_test.png"; // [image_surface:100x100]
//Length of the sides of the square actuator
Side_Length = 50;   //[1:100]
//Thickness of the first layer of silicone (Having different thicknesses on the layer will create varying effects)
Layer_1_Height = 4; //[1:4]
//Thickness of the second layer of silicone (Having different thicknesses on the layer will create varying effects)
Layer_2_Height = 6; //[1:4]

/* [Hidden] */
base_thickness = 3;
wall_thickness = 10;
shelf_width = 2;
image_scale = 0.01; // 0.01 if source is a PNG. Use 2 if source is .dat file in Customizer
tolerance = .3;     // used so Stencil fits in easily
// Calculated
stencil_thickness = Layer_2_Height*image_scale; //scale height
scaleFactor = Side_Length/100;  // pixels to mm
overall_height = base_thickness + Layer_1_Height + Layer_2_Height;

//
Delta = 0.1; // small overlap for perfect booleans

//
print_part();

module print_part() {
    if (part == "first") {
        mold();
    } else if (part == "second") {
        stencil();
    } else if (part == "both") {
        both();
    } else {
        both();
    }
}

module both() {
    mold();
    stencil();
}

module stencil() {
    translate([0,0,Layer_1_Height+Layer_2_Height+23]) // position over mold
    scale([scaleFactor,scaleFactor,1])
    difference() {
        // the image shape
        scale([1.01,1.01,stencil_thickness])
            surface(file=Image, center=true, convexity=5);
        // subtract the floor (hole)
        cube([135,135,2*stencil_thickness+Delta],center=true);
    }
}

module mold() {
    box_width = Side_Length+wall_thickness;
    Layer1_width = Side_Length-shelf_width; // stencil rests on layer1 shelf
    Layer2_width = Side_Length+tolerance; // stencil fits in easily
    difference() {
        // Outer Box Shell
        translate([0,0,(overall_height)/2]) {
            cube([box_width,box_width,overall_height], center = true);
        }
        // Subtract Layer1 (lower level)
        translate([0,0,base_thickness])
        translate([0,0,(Layer_1_Height)/2]) {
            cube([Layer1_width,Layer1_width,Layer_1_Height+Delta], center = true);
        }
        // Subtract Layer2 (upper level)
        translate([0,0,Layer_1_Height+base_thickness])
        translate([0,0,(Layer_2_Height)/2]) {
            cube([Layer2_width,Layer2_width,Layer_2_Height+Delta], center = true);
        }
        
    }
}