Hi Gordo,

Indeed, a notification or color coding in the object viewer when a solid becomes joint surfaces through filleting/boolean op would be useful.

The show naked edges script (you can assing a shortcut to it in Options->shortcut keys) is useful when you have to diagnose problem areas:

script: /*! Show naked edges --- Ctrl+M*/ var gd = moi.geometryDatabase; gd.deselectAll(); var breps = gd.getObjects().getBreps(); for ( var i = 0; i < breps.length; ++i ) breps.item(i).getNakedEdges().setProperty( 'selected', true );

I tried to delete and recreate the disconnected surfaces using network, but I was unable to join them as well. You might want to create the solid from scratch as there is a "bump" at the front narrow part of your objet that looks like it was not as intended. Sorry I could not be more helpful :|