Thanks! This vase: Wooden foot for 3D-printed ceramic vase was printed with a 1.5mm wall thickness, and it is OK for a decorative vase – watertight and everything. It’s fragile, though, and too thin for a cup or something that would be handled frequently. I’d probably go 4mm or more for a cup. The material is porcelain, and at the recommended firing temperature, it will very likely be watertight without a glaze. It has a nice matte appearance, and feels like 320 grit sandpaper to the touch.