KobraCast® is a woven plastic cloth which can be softened and moulded under heat. It is woven from strands of thermal plastic and synthetic thread, so it has the texture of linen. It was originally developed for the medicine industry, as a new, lightweight casting banadage to replace Plaster of Paris.
KobraCast® becomes mouldable when heated to temperatures over 80ºC. 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. It can also be reheated and remoulded.
KobraCast® is mouldable for about 5 minutes after heating. Once moulded and cooled, KobraCast® becomes extremely strong and rigid. It retains its woven texture, and can be painted or sprayed, so can create a unique textural effect.
KobraCast® can be stretched on the bias to achieve fascinating contours. It can be easily cut with good scissors or a utility knife.
When using KobraCast® for blocking, it is best to overlay it with interfacing to soften and smooth the surface. Otherwise your finished piece may appear lumpy because KobraCast® is so heavily textured.
When working with KobraCast®, we recommend keeping your hands or tools wet to prevent them from sticking to the material.