I have. I did a Xmas tree topper that was a Noahs Ark. It turned out prety good and held the detail fair enough. I found I had to use exacto chisels so I wouldn't tear the wood. It had a elephant, girrafe, and dove on it the inside was hollowed out with a light in it, so there was plenty of detail, but Im not standing in line at the balsa store any time soon

it will test your patience!