I finished my stands, and filled them with sand, actually Black Beauty sand blast media.
Just poured the media into my towers using funnel
Top, bottom, tower filled with sand. rubber stopper to contain sand. A long bolt, and a Tee nut hold it together
The finish came out pretty nice. I think the epoxy has sealed the seems from showing (so far).
The finished stands, polished and waxed ready to attach the speakers. It's difficult to tell, but the stands also have Black Chrome spikes.
Larry