I've searched and read many tips and quite a few questions on here but I'm still totally stumped!
I have a bathroom single lever mixer tap, and I'm 90% sure the cartridge needs replacing so thought I'd give it a go as it seemed pretty straight forward. I removed the handle of the tap, no problem, but the decorative bonnet (I've seen it referred to as a bonnet and a sheath) is not budging!!!
I have tried white vinegar to remove limescale, I've tried oust to remove limescale, I've tried WD40 to lubricate, I've tried a strap wrench but can't get a good grip because of the angle of the bonnet, I've tried heating it up with a hairdryer, I've tried pouring some boiling water over and using rubber gloves to twist it. Nothing is working. I've left oust most of the day and separately left WD40 overnight and neither seems to have helped...
A decent amount of gunk must have been dissolved as before the liquid would just sit at the top and it now oozes through suggesting it's working it's way through the thread?
Please any tips, advice, anything would be greatly appreciated! I'm not sure I've tried the "heating" methods enough to get it hot enough but I don't know how hot it needs to be?
Calling a plumber is an absolute absolute last resort and any way I don't have to would be preferable!
Pictures of tap for reference