Cloudcrete is a rotational molded series of whimsical hollow forms that feel as light as a cloud! We are working on perfecting the right consistency of the mix, methods of sealing the latex formwork, and the calibration of the thinness of the rockite in a shell. These initial tests included embedding connections in the concrete to be able to string or fit pieces together (grommets and hollow tubes) and adding a fine sand as aggregate to the mixture.
Test 1: Small kite with hollow tube.
Test 2: Three-legged amoeba with grommet. The rockite was able to get so thin around the grommet that light is able to show through.
Test 3: Larger kite with hollow tube and green sand aggregate. The volume of concrete was not enough for the shell to stay together, however broken open, one can see the light effects of the thin shell and the sand.
Example of mold but with less balloons. Still trying to create more void and cleaner openings. I would like to try and start creating the inverse of what is solid vs void
This came from an earlier study where the concrete stuck to the balloon and created a shell by chance. This was pushing that attempt to create a more controlled result of the same shell condition
So, I tried taking Peter's idea with the stretched nylon in a cage, but in the rotational molder to make hollow pieces. As per suggestion, I added "reinforcing" fiber to the rockite mix. That was a bad mistake. The fiber congealed all the concrete together in a ball rather than allowing for the mix to coat the inside of the nylon. Perhaps the nylon was also a bad surface to coat as it rotated and something like latex would be better.