I'm planning to build a DIY re-amp box (http://i96.photobucket.com/albums/l195/wolfeman28/Page3.jpg) in order to create real time effects from a guitar, to pure data, through the re-amp and then finally into my amp.

Has anyone attempted one of these for the same or similar purposes to my own? If so please throw me any tips/tricks/diagrams/products/general helpful comments you can conjure.

Cheers

Not meaning to troll but, I just plug my audio interface directly into my amp and it sounds like magic. Maybe I'm lucky with the preamp section of my amp or maybe I'm putting some kind of undue strain on it that will only be revealed after a few years of abuse.
I don't really know too much about the issues involved and am speaking from a position of ignorance so take what I say with a pinch of salt, however, I do paid gigs using this setup.
My gut feeling is that most guitar amps are designed to put up with a lot of abuse and plugging an audio interface into it (with the output level suitably low) is hardly a major problem.

But it still would be wise to cutoff some bass, because i think that running a 40Hz sine true an amp would stress it heavily...