Iteration Geo5 - Molding shell for alabaster plaster cast - small cup

after iterating over simple geometric shapes, this was the first attempt to make a two part mold for alabaster plaster. the shape i specifically made for easy release and equal wall thickness. solid basis for more complex structures

alignment is not ideal and a bit fiddly. the inner part needs a weight on it when pouring the plaster since it can jump out as the low infill makes it boyant on the liquid water-plaster mixture 

print in flexible TPU that it can be detached from the hardened plaster