A few years back some friends and I 3d printed a large dragon head. It's a little over 1m from the top of its head to the nose. We assembled it from about 120 pieces (from two different printers) and epoxied them all together. We then filled, sanded and painted it. It looks pretty nice, but I'd like to give the whole thing a protective epoxy coating. I have enough of Smooth-On XTC-3D to cover the whole thing but wanted to hear from anyone who has tried to coat finished and painted prints before.
Is this a good idea? Is there something else that might work better?