Features. Crayola - Melt n Mold Factory Kit.. Mix melt and mold your favorite crayon colors to make eight cool projects. Everything you create makes the bold colorful marks that you expect from Crayola crayons.. Use this kit with the Melt n Mold Factory.. This 8-0.5 x 6-0.5 in. package contains one mold and twelve crayons.. Design - Color Spinnerz - Twisted Rainbow. For ages 8 and up.. Non- toxic.. Conforms to ASTM D 4236.