11-03-2019, 01:25 PM
If you do a google search for food safe coatings, there are lots of different options, a lot of which are silicone sprays, but there are others.
If you're just making a whistle, I don't think there would be too much concern with it though, at least there wouldn't be for me.
If you're just making a whistle, I don't think there would be too much concern with it though, at least there wouldn't be for me.