My love had shown me the brush holder that was out of stock, and super expensive. I then was tasked with creating one for her. She liked the overall shape and some of the dimensions, so I tweaked it and made it my own. I used Amolen Black Silk PLA for the plastic. The top is not rounded due to it being the flat surface and she likes to have the rounded corners to not have any blemishes. I still struggle with that a bit. If you want the model with three slots (that she ultimately veto'd), I am currently keeping that private unless anyone cares for it. Thank you for your time :^)