FIMOair is available in four varieties: FIMOair. FIMOair light. FIMOair granite-effect and FIMOair wood-effect. What all four have in common is that you don't need to use an oven or kiln to harden the clay. These modelling clays can simply be left to dry naturally in the air. and are still extremely break-resistant once dry. You can start finishing pieces as soon as they have dried. Use corresponding accessories to paint. drill or varnish your items to suit your style!