This is one place you could share information about your home-built machines. If you look in the Forums http://www.cnczone.com/forums/ you'll notice that there are categories for various different types of machines, depending on what they're intended to do. So if they are metal-working machines, for example, you can post there, or if they are wood-working machines there's a different forum for them. Look through the list and try and find the most appropriate category for the machines you've built.