I got this today. Mrs TYA has been after one for a while now. To be used for Brownies and Rainbows. The plan is to use it make dough stands to allow the small humans to make things. Now we all know what small humans are like. They will but things into their mouths. This leads on to my question. How can it be made safe? I know it needs to be cleaned up. But how to seal it? This rust looks like it was transferred from the screw to the enamel finish. Advise please.