Rainbow Meltdown

Glue several packets of rainbow coloured crayons across the top of some heavy 600gsm or higher cardboard.

Using a heat-gun, slowly heat up the tips of the crayons until they start to melt.

Careful not to melt the glue.

Once they start to melt, raise the cardboard up so that the melted crayon runs down the surface of the cardboard.

Repeat for all the colours.

Enjoy and stay safe with tools and heat guns.