this is not my design. credits goes to @CreateCafe3D

The Klein vase was designed for a flower lover. Our design was created by taking two mobius loops, sewing them together, thickening that surface, and then strategically punching a bunch of holes into it using a UV map. After a succesful watertight print, the stem of the vase proves to be an elegant home for flowers. This model requires no supports and scales up/down very well. It's a small perimeter challenge for printers. Make sure your printer's retraction is up to snuff. How big or how small can you print it?