Hi Marco - the tolerance in MoI does not work quite exactly the same as in Rhino. In many areas MoI uses an "adaptive tolerance" where it's based on a fraction of the size of the objects involved rather than just fixed at one individual hard coded value.

There are still some areas where MoI uses a fixed tolerance, and for those areas it uses a value of 0.001 units, there is not currently any way to adjust that.

What in particular are you trying to do where you want to adjust the tolerance value?

- Michael