Jim, Actually it can all be accomplished in the spline modeller if you want. I just made 1 cross section with a compound path for the hole in the center and repeated it along he extrusion path. Then, on cross section 2, released the compound path, selected the control points on the cutting edge portion of the blade and moved them downward and reactivated the compound path. Bada-bing, bada-boom, razor blade. Now this makes sense to me but it doesn't mean I explained it well. Let me know if I need to be clearer. Mark