(no subject)
This was a test to see if I could build a Soma cube out of Sonobe units. Building a basic cube from these components is straightforward enough, and it seemed to me that they could be used on inside edges just as readily as outside edges, but building an actual model would settle the matter.
Having built it, I found that the Sonobe units forming inside edges have a tendency to slip loose, because there's nothing for them to brace against. Think of the model as a building. There are no supporting walls inside the model to keep units from sinking inward. A Sonobe which forms an outside edge is held up by the unit it slots into, but if it forms an inside edge, it's hanging from the unit it slots into.
In conclusion, you can build the pieces of a Soma cube this way, but they won't be entirely stable. As the Soma is a tactile puzzle, this is of some concern.
Having built it, I found that the Sonobe units forming inside edges have a tendency to slip loose, because there's nothing for them to brace against. Think of the model as a building. There are no supporting walls inside the model to keep units from sinking inward. A Sonobe which forms an outside edge is held up by the unit it slots into, but if it forms an inside edge, it's hanging from the unit it slots into.
In conclusion, you can build the pieces of a Soma cube this way, but they won't be entirely stable. As the Soma is a tactile puzzle, this is of some concern.