About this 3D model

I like the look of Eloi Arrufat's Silhouette chess set, but when I actually tried printing it I noticed some problems with the design. I thought if I made some minor modifications it might print without supports. But when I imported the STL for editing... it needed a lot more than just a little bit of work. In the end I redesigned the whole set using the original set as reference. Turns out many of the top curves, espeically of the queen, pawns, and knight, still do better with supports. However, I included a "thicker" set that might fix this problem, but at the time of uploading those "thicker" pieces are untested.