: Hi Mike,

: You'd have to do a test to be sure, but I'd initially bet that the epoxy
: mixture would be heavier.

: Bill H.

Well- I finally got around to it. This is totally not scientific, so probably not that accurate, but appears that an equal volume of mahogany is around 20% lighter than epoxy/cab-o-sil. I'm running low on microballoons, so I didn't add any to this mixup. Saving them for something important. If I have leftover from a future batch I'll do a better test. My scale is not all that accurate with super light objects.

m