Cement to fill speaker stands?

If you use cement, make sure not to get some using a fine powder. You think sand will make a mess……… Also, try not to get lime base. Sounds more expensive than sand. However, if you own a company making cement or know where you can get for cheap & have a good back, knock yourself out.

BTW padames, if you visit a local diving/scuba shop, you'll find coated lead shot that is sometimes used for ballast bags. In most cases the shot is coated with a substance like copper or even a light wax to reduce toxicity. Usually more expensive than uncoated lead shot, but it will not reduce as many years from your life.
Cost is approx. 30% more than uncoated.

The wallpaper decorator had visions of being in the cement mix after seeing Carmela !!

Cement will cover with dust that is very hard to remove anything that is not protected. It tends to cloud when you pour it so be carful not to breath it as silica sand is similar to fibergass particles, very bad.

Make sure to get the Cryo'd cement! Don't just settle for the straight audio grade, as has been suggested! You'll just have to upgrade later on and that stuff is not easy to resell here on Audiogon if it ain't Cryo'd.

Seriously, if you haven't handled cement powder before be aware that it's not the most pleasant stuff to handle. If you decide to try it wear gloves and long sleaves or you will find it will suck all the moisture from any skin it comes in contact with and your hands will be as pleasant to touch as a sun-dried dead fish for the next few days. Also definitely wear a dust mask and work outdoors. As has been said, the powder is very fine and gets everywhere, and some of the ingredients can wreak havoc in your lungs.