Jay if you don't bolt it to the floor, I definitely would add weight. I have to disagree with Bill on this. I built a stand for the 15" C-man with the leg about 32" wide and the top was 1' wide. It was pretty stable till I put a unbalanced piece on it. Then it wanted to dance across the floor. My $1.298 is if you are going to do lidded boxes, mini birdhouses, Christmas ornaments, pens, etc. you probably don't need the weight. If you are going to do bowls with that Nova up to 16" yes you will need the weight. I turned a 14 3/4" bowl out of a out of balance blank and had to turn the speed down to 200 or below just to get it to sit still.
I added 320 lbs of tube sand and then could run around 400 rpm. Haven't had a problem and haven't looked back since. Again this is just my opinion.
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