Green Stuff World - Blue Stuff Mold Bar - 8-Pack Blue Stuff is a new generation of thermo plastic molding material wich can be reduced to mouldable conditions by immersion in hot water during 3 minutes. It will allow you to create an instant mold of any piece you wanted by pressing the plastic material against the piece you want to have the mold made from. After that, make copies by using any kind of putty, polyester resins or even epoxy resins. Nothing will get stuck. REUSABLE plastic moulding for all levels. Specifics: New improved formulation that will allow you to have better details since the plastic will remain more time in soft state. This set contains 8 bars and it will last for ever. Dimension of each bar: 5. 8ﾗ1. 5ﾗ0. - Green Stuff World - Blue Stuff Mold Bar - 8-Pack