The 1x1x1 building block is a 3 inch by 3 inch by 3 inch (76mm by 76mm by 76mm) cube intended to be used as a fill in size for commonly found cardboard building blocks.
This is meant to be a child's toy to help further bolster creative play.
The block is hollow to keep weight down while still being structurally sound. Large corner radii have been applied everywhere to maintain part safety as much as possible. The part should be printable without any supports needed.
If you want to tip me for designing the model, please see the Cults3D listing for this and other models I have made: https://cults3d.com/en/users/MaroonMatador/3d-models
The author marked this model as their own original creation.