I'm looking at ordering some colored sandstone statues and I wanted to ask if anyone knows if I can put some kind of sealant or topcoat on them in order to prevent the colors from running in case they get wet. Any help would be amazing on this!!
You could try some sort of clear urethane spray. I don't think it would make it totally waterproof but it would certainly help protect the colors. Let us know if you do any experiments! Natalia
Check this thread: https://www.shapeways.com/forum/index.php?t=msg&goto=5177 6&&srch=sandstone+sealer#msg_51776