jax2 has very good information. Kitty litter has been used by some for decades, but it lacks the mass most seek. Play sand is great and cheap. Both dampen the ringing effect of sound waves striking metal stands.
I always used lead shot (with gloves on) and sand for my Sound Organization stands and it worked well. Now only steel shot is available.
I always used lead shot (with gloves on) and sand for my Sound Organization stands and it worked well. Now only steel shot is available.