This is just my method, but I dont grind down anything when taking off the old glue.
I do however, use two methods (depending on how I feel like doing it)
1. Cyanoacrylate de-bonder and then I just chisel the old glue off. It comes off pretty easy, I can clean a spider landing in under 5 min with this method.
2. Gel based paint stripper. This takes longer, but if you're not in a hurry its just fine. You just paint the stripper on the spider and basket landings and let them sit for about 2 hours. This turns the ca glue into a gelly mess, which can then be washed off with a water hose since its water soluable.
just my method, doesnt mean im right //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif