Add another vote for Sketchup. I haven't used it for knives specifically, but for lots of other things. I have several CAD programs but when I need to draw something, Sketchup gets you drawing fast and easy. There are some great video interaxtive tutorials, plus and awesome forum. It's a lot like this one. Lots of really helpful people involved. And all this for FREE! One of the best deals in computing. Plus, once you get the hang of it, you'll use it for all sorts of things. Want to know how to layout your shop to best make use of available fllor plan? Just draw the floor, then make blocks of the correct size to represent the foot print of large machines, benches and cabinets. Then move them around. Do it in 3-d if you have extra time. Wife been after you to make a shelf for that wall over there? SKetch one up. Even of you don't get around to building it, you can show her the sketch and prove you're working on it. "I'll get to it as soon as I'm done tweaking the design babe!"