Do consider some cheap bed risers from Bed,Bath, Beyond if you're basting on a table. I get that a table is better than the floor, but that advantage disappears quickly if you herniate some lumbar discs as I did. I thought my table was high enough and never saw it coming. Didn't even notice it that day, but the next, innocently lifted one foot and that was it for months. I use 7" risers and love them.
hugs,
charlotte