pre-bemis

rpi-case/.claude/skills/openscad/examples/parametric_box.scad

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+// Parametric Box with Lid
+// A customizable storage box for 3D printing
+
+// === Box Parameters ===
+width = 60;              // [20:200] Width in mm
+depth = 40;              // [20:200] Depth in mm
+height = 30;             // [10:150] Height in mm
+wall_thickness = 2;      // [1:0.5:5] Wall thickness in mm
+
+// === Lid Parameters ===
+include_lid = true;      // Include a separate lid
+lid_height = 8;          // [5:30] Lid height in mm
+lid_tolerance = 0.3;     // [0.1:0.1:0.8] Gap for lid fit
+
+// === Style Options ===
+corner_radius = 3;       // [0:10] Corner rounding radius
+add_grip = true;         // Add grip indents to lid
+
+// === Internal ===
+$fn = 32;                // Smoothness
+
+// Rounded box module
+module rounded_box(w, d, h, r) {
+    if (r > 0) {
+        hull() {
+            for (x = [r, w-r]) {
+                for (y = [r, d-r]) {
+                    translate([x, y, 0])
+                        cylinder(h = h, r = r);
+                }
+            }
+        }
+    } else {
+        cube([w, d, h]);
+    }
+}
+
+// Main box body
+module box_body() {
+    difference() {
+        rounded_box(width, depth, height, corner_radius);
+        
+        // Hollow inside
+        translate([wall_thickness, wall_thickness, wall_thickness])
+            rounded_box(
+                width - 2*wall_thickness,
+                depth - 2*wall_thickness,
+                height,  // Open top
+                max(0, corner_radius - wall_thickness)
+            );
+    }
+}
+
+// Lid
+module lid() {
+    inner_w = width - 2*wall_thickness - 2*lid_tolerance;
+    inner_d = depth - 2*wall_thickness - 2*lid_tolerance;
+    lip_height = lid_height * 0.6;
+    
+    difference() {
+        union() {
+            // Top cap
+            rounded_box(width, depth, wall_thickness, corner_radius);
+            
+            // Inner lip
+            translate([wall_thickness + lid_tolerance, wall_thickness + lid_tolerance, -lip_height + wall_thickness])
+                rounded_box(inner_w, inner_d, lip_height, max(0, corner_radius - wall_thickness));
+        }
+        
+        // Grip indents
+        if (add_grip) {
+            for (x = [width * 0.3, width * 0.7]) {
+                translate([x, -1, wall_thickness/2])
+                    rotate([-90, 0, 0])
+                    cylinder(h = 5, r = 3, $fn = 16);
+                translate([x, depth - 4, wall_thickness/2])
+                    rotate([-90, 0, 0])
+                    cylinder(h = 5, r = 3, $fn = 16);
+            }
+        }
+    }
+}
+
+// Render
+box_body();
+
+if (include_lid) {
+    // Position lid next to box for printing
+    translate([width + 10, 0, lid_height - wall_thickness])
+        rotate([180, 0, 0])
+        lid();
+}