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0.5cup_soap_cup.scad

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+total_height = 220;
+volume = 118; //mL
+cup_height = 30;
+wall_thickness = 3;
+
+// Calculate radius
+inside_radius = sqrt(volume*1000/(PI*cup_height));
+
+$fn=100;
+// Generate cup
+union(){
+    translate([0,0,cup_height/2+wall_thickness/2])
+    difference(){
+        cylinder(r=inside_radius+wall_thickness, h=cup_height+wall_thickness, center=true);
+        
+        translate([0,0,wall_thickness])
+        cylinder(r=inside_radius, h=cup_height+wall_thickness, center=true);
+    }
+
+    translate([0,0,total_height/2])
+    rotate_extrude(angle=30)
+    translate([wall_thickness/2+inside_radius,0,0])
+    square(size=[wall_thickness, total_height], center=true);
+}