Hi All I have been looking at 3D printing for a while (Im actually quite excited) with a few work generated ideas. I work for a fencing/security company and we specialise in automated gates. I have been tossing around the idea of making working models of different types of gates both swing and slide. I use Sketchup - free version and dont have much experience in other software. How easy is it to make scaled down versions with small working wheels/hinges? I guess I would have to redesign all the separate parts so they can be assembled when they arrived. Examples of they gates that I design can be seen at http://sketchup.google.com/3dwarehouse/search?viewer=0190090 596165192149736234&scoring=m Shem that some of my better models cant be shared as they are sensitive data. Any help or advise would be great.