Yeh I have seen them, but they use a completely different rail system and 3d printed parts. The 3d printed parts I want are specifically for the Cerberus style delta printer. Which incorporates a lot of the features I like. I have looked for about 2 weeks without being able to find anyone offering the 3d printed parts I need for my Cerberus Pup project. I have all the .STL files just no printer to print them. The Kossel and Rostock printed plastics will not work for the Cerberus design or I would have used them. Thanks for the info though.