25-04-2024, 10:27 AM
(This post was last modified: 25-04-2024, 10:30 AM by Mike Watterson.)
Maybe this?
https://thebrickblogger.com/2020/06/rest...go-bricks/
Particularly grey and white Lego used to go yellow or brownish. Apparently they changed the material and now they don't discolour.
Some plastics may yellow due to UV degrading the structure, rather than flame retardants. In such cases only an opaque paint will stop future yellowing and any kind of bleaching might not work.
Some kinds of yellowing may respond to baking soda, or even some sorts of toothpaste (not gels, and Pearl Drops is so abrasive it's really a scratch remover).a
https://thebrickblogger.com/2020/06/rest...go-bricks/
Particularly grey and white Lego used to go yellow or brownish. Apparently they changed the material and now they don't discolour.
Some plastics may yellow due to UV degrading the structure, rather than flame retardants. In such cases only an opaque paint will stop future yellowing and any kind of bleaching might not work.
Some kinds of yellowing may respond to baking soda, or even some sorts of toothpaste (not gels, and Pearl Drops is so abrasive it's really a scratch remover).a
