I'm trying to remove a very old faucet but the metal nut is completely stuck. I've sprayed it with wd40 and tapped it and scrubbed it with steel wool a bit around
DIY Basin Wrench for Plastic Faucet Nuts - YouTube
Removing a Faucet (Top-Mount or Bottom-Mount)
Quick Disassembly Faucet Anti-loosing Nut Universal Anti Loose Nut Tap Faucet | eBay