Hi Guys, I usually use SW for tool and die design (square blocks with lots of holes). A customer wants a riser designed for his chopper and I have tried numerous surfacing techniques to no avail. I have only had the basic SW training and the sheet-metal training. If someone would be interested in making a few suggestions as to how I can model this riser so that the radii are tangent with the top and bottom surface I would be so grateful.... I have uploaded the files to [URL]http://www.ttmdesign.com[/URL] Thanks in advance, CC