Guys, Has anyone used thin protrusions (Feature/create/Protrusion/thin)? They don't seem to behave in the same way as a solid protrusion. I created a channel section by sketching the outer edge thus: |____| and specified a thickness. I then wanted to create a cut through both legs. So I sketched the cut on one of the legs and specified 'through all'. Strangely, the cut only went through the far leg, but not the one I sketched on. I could get it to go through both legs by:- 1) specifying the cut to go in both directions, or 2) offsetting the sketch plane away from the leg. Does anyone know why I have to do these work-arounds for thin sections? Dave