Thread: Rubberset Aluminum #3 - What to do....

I've also restored a few and did manage to remove the top by immersing in limescale remover a couple of times and then applying a liberal amount of WD40.

Don't put the top in a vice as it can crack - for a really stubborn one I held the handle in a vice and used one of those rubber grips on the top. However as Tom says you can get away with removing the knot top down.