This stuff is great , go buy some from there website, its cheap as hell like 11 quid for 5 packs... You can make your own as well, I think its cornstarch, silicon rubber and food coloring. You can also make silicon rubber molds with this, so its very useful if you have that one part that you just want to reproduce for a model. The price is not comparable to silicon mold rubber mixes though they are cheaper than Sugru, but Sugru is far far far less messy.... ! Worth having a little kicking about...