Hi Danny, you mean a size of 3 meters, where you are using meters as units in MoI?

There isn't just one single answer to that - it depends on the size of the smaller details in the model. I guess it should actually be ok to go down about 0.01 units for a size of a feature but not too much much more down than that.

So if your 3 meter object has details in it that are smaller than 1 centimeter in size, you will probably need to model it with centimeters as units instead of meters as the units.

But if your 3 meter object has details in it around 1 centimeter or larger in it, then that's fine.

- Michael