Hi Pascal and others,
I have a wish. Sometimes we have to import heavy engineering files that come in solids. In my case it s an aircraft seat for example. It comes with everything all the nuts and bolts, washers, cables etc… They re all on the same layer and the block manager doesn t allow to delete the specific solids since the links are broken. It s a painstaking task to go and get rid of all superfluous solids such as those , bolts, nuts, washers, springs, cables etc… we re talking thousands of little solids that just slow down Rhino for no good reason. My suggestion is to have inside the selection filter a function that excludes any solids by volumes measured. For example, we key-in select volumes below 2 cubic in. and once everything that fits that description is highlighted, we just deleted.