For anyone interested, here's a canvas I had made from a model I designed myself in Rhino and rendered in Keyshot. It's been hanging on the wall now for about 6 years and doesn't show any signs of fading. The bloke who made it for me has applied a light coating of varnish or other coating of some kind and it adds a nice finish and protection to the print.
(Sorry the picture isn't great. Just a quick snap from my old camera).
The rings say, 'Here is my heart ... Guard it well.' (Yeah, I know, sentimental old tosh, but I wasn't the cynical old git I am now back then! ).