urbanfox said:
1) thats just someones project if u took the 20 seconds i did to read it, not main stream
2) as i said b4, that page is just scrambling together some upgrade parts. not a build urself an apple kit.
1) You obviously took less than 20 seconds to read it, since you didnt even get to the first line, which states
"Building your own G4 can be both fun and exciting, and in doing so you will join a small but growing group of computer enthusiasts."
i.e. This is not just one mans personal project.
2) If you'd bothered to look at the 'Places to obtain parts' link you'd see that all the parts can be bought brand new. Obviously there are going to be a limited number of suppliers, as macs are less popular than pcs by a long way, and there is a pretty standard spec for all g4 macs which makes customisation a bit limited.
The original question was 'can you build macs yourself', and the answer is yes.
Shopping around for different parts with varying specs is what makes building your own pc worthwhile. If it all came as a standard 'build your own apple kit', what would be the point?
If you ask me it's probably not worth the time, effort and expense building your own mac unless you're really enthusiastic about the idea.