cross-posted from: https://lemmy.ca/post/54746362
I was burning a cone incense and left it on the sink, and this stain won’t come off. I tried baking soda, water, vinegar, hydrogen peroxide. I tried letting them sit for multiple interations, and it made no difference.


If it’s acrylic, you can use an acrylic tub/sink repair kit but you need to use the right kind of kit so make sure you know which it is before you try. Based on what it looks like, it appears to be some sort of plastic.
Tap on it: Does it sound plastic? Metal/ceramic maybe? Do magnets stick? If so, it’s probably some sort of enamel over steel.
Does it flex at all? If so, probably plastic.
Alternately, you could replace it entirely. If money is tight, hit up surplus stores or used item stores for a decent deal (Habitat for Humanity Re-Store, flea markets, Craigslist, thrift store, etc.).