Love the bowls. I have made several and people seems to enjoy being able use them in the microwave. I have added one more step (after making a few). Hope this makes sense.....I take a piece of paper and make a round circle to fit in the bottom of the bowl (use your judgement on size). Pin it in then sew around it, move out another 1/4 inch and sew another. This really gives the bowl some stability.
Yes this makes sense. I saw some that had been sewn like that. I might try that.