For a long time I've wanted to install one of these to pull graffiti off of trains. As art goes, graffiti is one of the last 'free' expressions where it is esse

For a long time I've wanted to install one of these to pull graffiti off of trains. As art goes, graffiti is one of the last 'free' expressions where it is essentially truly anonymous and definitely not for money. Being free of those constraints, I think, frees the mind to truly create. And I'd love an archive somewhere of some of the truly awesome train art I've seen.