Worbla's Finest Art® is a thermoplastic - a type of plastic sheeting which becomes soft and shapeable under low heat. It was developed for use in 3D design.
It comes in a flat sheet about 1.5 mm thick, but once activated with heat, Worbla® can be moulded almost like clay.
Worbla® activates at temperatures above 90ºC. It can be activated under dry or wet heat, so you can use a hairdryer or heat gun; an oven or microwave; a steamer, or immersion in hot water. Heat guns are the most popular method as they allow the most control. However, Worbla® should not be exposed to an open flame.
After heating, Worbla® will remain malleable for about 2-3 minutes before it sets into shape. It can also be reheated and remoulded, so if you're not happy with the shape you've created, heat it up and try again!
Any offcuts can be melted down and used for reinforcement or shaped into embellishments, so there is virtually no wastage!
Worbla® can be easily cut with good scissors or a utility knife.
While heated, Worbla® is extremely flexible, because unlike Wonderflex® and KobraCast®, it does not contain a woven component. However, this means that if it is stretched too far, it can lose structure and collapse.
If you are painting or spraying Worbla®, we recommend you use a primer (such as Gesso) or sand the surface before applying colour, because this material can have quite a rough surface after shaping.