This openscad code and models solves the Challenge: "Eureka!" Design an object that expresses the beauty of math. With the following parameters: "Public"(used the Reverse! card) and "Complex" Sine waves combine to form beautiful super positions all over these vases. You enter values for the period of each of 5 layers and interesting super positions form between the layers. Enter numbers that have meaning to you and display this vase as a conversation piece. I made one using my name "Mark" (plus a base layer) by assigning a number to each letter based on the idea used for ASCII digital values of the characters. The vase looks amazing. You could also use a significant date, since small vases look better with layer periods under 100 you can split the year up, and add 10 as a base layer to keep the bottom smoother. For example today;s date 11-14-17 , with a base layer of 10 would be p5=11,p4=14,p3=20,p2=17,p1=10, Try all prime numbers ! Try all even numbers! it's really fun. There are are lot of parameters in the code to make fascinating vases that look like crystals, for example: $fn = 6; thickness = 4; amplitude = 2; step = 12;