Yeah, I know it's difficult, but I wanna hear what other people think about building an espresso machine. I've seen little things people built, but they weren't really machines. I'm a DIY kind of person, and I love making my own stuff from beginning to end.    Is this too much or a bad idea?  I'd like to try building one for myself in hopes of saving $$.  If you have the parts, and they are assem…