not sure if it is safe

[affectionjunkie.livejournal.com]

so, I've been making records bowls where you melt a record in the oven (I usually put it at 145 degrees F) and then mold it into a bowl by either placing it over another bowl or just trying to form it myself. I've made quite a few, and would love to teach this craft to children but first....
anyone know if melting records is hazardous to ones health? (releases gasses, etc?