What to fill your stands with?
I have some metal stands which I'd like to fill for stability. Noel (of Skylan) has mentioned "Kitty Litter" which he showed me at the Montreal show 2008 and has been mentioned here before. Not being a pet owner, I thought it would be easier to go to a builders warehouse and purchase a large polythene sealed-bag of 'coarse sand'. I then bought a cooking funnel from the supermarket and that's when the problems started ..... so here is my experience ....
1) The sand had sweated inside the polythene bag. That means it is damp. The consequence is that is cannot be poured down the funnel; it just sits as a clump.
2) It would have been better to buy 'silver sand' sold for children's playgrounds. Even though it too was sold in sealed polythene bags, you could see through the bag that it flowed freely and was not clumped together. Perhaps this sand is cleaner or treated to be more resistant to moisture.
3) I passed an out-of-town pet store and enquired about "Kitty Litter". From memory, "Kitty Litter" comprised small, baked-bean sized round smooth balls of some odourless chalk-coated material. The pet store had never heard of it. I asked to be shown all the cat litter products that they had. The normal product sold for the purpose is an irregular sized and shaped, white, chipped material. I bought that.
It seems to me that Noel is correct and that the most elegant, simple and clean stand filling material is indeed "Kittly Litter" - but it does not seem to be available here in the UK. I'm sure that the white chipped material (or dry silver sand) has similar or interchangeable acoustic properties but none beat "Kittly Litter" for simplicity.
I will take some pictures.
Alan A. Shaw
Harbeth Audio UK