tksakuma Posted June 12, 2022 Share Posted June 12, 2022 Hi All, I got back some freshly graded slabs and have been getting these weird "suction cup" like issues. It's inside and annoying to look at. I assume it won't damage the comic but not sure. What to do? Thoughts? Any and all thought appreciated! Thanks. Link to comment Share on other sites More sharing options...
Lightning55 Posted June 12, 2022 Share Posted June 12, 2022 They are known as Newton Rings. When the plastic from the case touches the dissimilar plastic of the inner capsule, light refracts forming these artifacts. So basically you have 2 dry pieces of plastic touching each other, not a threat to your comic. There are many threads about it over the years, so search "Newton Rings" in the box above to find them. Some people hate them, some don't care, no one likes them. Sometimes the plastic moves due to expansion from temperature changes, etc. and can lessen the effect. It's a bit random. Courageous Cat 1 Link to comment Share on other sites More sharing options...
tksakuma Posted June 12, 2022 Author Share Posted June 12, 2022 Thanks for the info. I thought Newton Rings were more rainbow like which I also have of other slabs this seemed different and less oily and more actual spirals and rings. I guess there are different types of Newton Rings? Thanks. Link to comment Share on other sites More sharing options...
theCapraAegagrus Posted June 13, 2022 Share Posted June 13, 2022 Yeah, sadly, Newton Rings are fairly common. Their appearance depends on multiple factors. In this case, it appears that the materials are flush, resulting in the effect looking less visually 'exotic'. Link to comment Share on other sites More sharing options...
