After the first aesthetics prototypes of the stools, I focused on the industrial possibilities of using brewer’s spent grain instead of a raw material.
The aim was not to create a new process but to find a way to integrate a production line.
These experiments show the first attempts we made by using a compression molding process.
In this process, the wood fiber usually used needs 5 % of binder and a heated compression of 12/15 seconds per millimeter.
While using spent grains, we found it to be a true alternative:
– Spent grains, because of its porosity, only needs 2% of binder which involves a lower compression time and temperature.
– We also came up with cleaner edges thanks to the smaller size of the fiber.
More ecological, more economical, more aesthetic, spent grains seems to be a true sustainable alternative.