Most stone sculptures are created using a subtractive process. Material is slowly removed to reveal the artist’s vision. I made the piece featured above using an additive process. Over a period of years, I added one layer of calcium oxalate at a time to form the final contours. My previous attempts did not have the same surface texture or symmetry that I find so interesting in this one. I have added it to my collection and hope to display it along with some of my other creations at a future exhibit. Unlike some of my other endeavors, work on this project involves a chemical process that takes place in the background, requiring minimal time and attention from me. The only difficult part, which can be a real pain, is removing the artifact from the chemical reactor in which it was formed, especially if permitted to grow beyond the dimensions of the outlet line.