It is possible to dry paper mache, also called papier mache, in a home oven set to warm. The paper mache project needs to be checked every 10 to 15 minutes to avoid over-drying or browning the piece.
Paper mache is a type of sculpture made from strips of paper dipped in a paste of flour and water. The paste holds the paper together, and the entire structure hardens into a wood-like texture. Larger paper mache pieces are built on top frames constructed of wire and crumpled foil. Paper mache should not be formed over plastic or rubber pieces if the intent is to dry them in an oven. Plastic and rubber typically melt or give off fumes when heated.