Help! I got shown how to do this in training the other week and I can't remember how to do it. I have drawn a cylindrical part which has various internal diameters running throughout it's length. I am trying to do a face fillet between differing ID's. I can't pick the internal faces due to the outside external face getting in the way. I was shown away of setting the external face to be ingnored allowing me to pick the internal faces. This I can't remember how to do and I am hoping someone can jog my memory how to do it. I have been flicking through the training book (Solidworks) but I can't see anything to help me. Can someone enlighten me please? Cheers David