Goto Home Depot and ask for pipe insulation. You could put this either inside the pipe or outside (they sell many diameters). Another options; Get some packing (foam) peanuts and just jam them into the pipes. Spray foam is another idea but may be hard to fill the entire length.
Any Way To Damp Ringing Stands Without Adding Weight???
My 24"Pangea stands ring like a bell when I tap them..I don't want to add weight...I read about unscented kitty litter but with 1000% humidity where I live probably not a good idea since it absorbs moisture...How about spray foam like you use in construction to plug holes?Any other ideas?Thanks much..