I make a lot of personal models, but I don't publish much. I create whatever strikes my need or fancy. I'm still learning how to assign colors to models. which is why this one is not assigned. This has large threads which should screw together, they may get tight at the end, but it makes it not move loose easily. One bottom is without Shulker head facial features. the other bottom has the Shulker head which I created embossed areas for hand painting. the photo looks lopsided, because it's near the top of the threads and almost coming out, lower down it is straight. Enjoy.