Microwave Dough Craft Book - DIY Clay & Polymer Clay Kit for Kids & Adults | Creative Art Projects, Home Decor, Gifts

I had recieved this book last Christmas. After my exams I decided to relax and make something. I came accross this book and went through the book decided to make the star candle holders. When I put it in the microwave and put it in for low at power level 2. After the first 20 minutes, it exploded. I don't know what happened. I decided the next day to try and put it at 2 for 10 minutes with a cup of water. That didn't work either and the microwave sounded sick. I would like to know what to set it at for a 1000w microwave because there are many wonderful projects to make.