This rook is from my first ever solo-designed chess set. It's designed with tournament standard sizes in mind, and its base diameter is a little less than 3cm. This piece should not require supports, but if I'm feeling cautious, I'll include them anyway.

Incidentally, if you find yourself printing all of my Mk. 1 chess pieces in the series, it's worth noting that without any planning, I incidentally designed the rook and pawn pieces to accidentally form a ball and socket joint. Something silly that's worth playing around with. Enjoy!