Hi, I found and european site -Spain, that offer two materials for use with figures etc, one of them the "BlueStuff" some kind of thermoplastic material that can be used to reproduce parts or figures. Are reusable, and only you need a glass with warm water.
The other are two parts putty, called "GreenStuff", come in two parts one yellow and blue one.

I want to know if this materials can be found in the States?.

Any clue?, TIA

Alvaro

Green Stuff sounds like Kneadatite epoxy putty. You can find it on Ebay, as well as many hobby and hardware retailers. It's a two part epoxy putty--you mix the two colors, and it hardens chemically without any solvents. It has the consistency of chewing gum, and can be used for sculpting small, sharp details. Tamiya also makes two similar epoxy putties. There are many different type of epoxy putty, and each has different qualities making it useful for different tasks. Milliputt, made in Britain, is like a sticky dough, though the superfine white type has a smoother texture, and Apoxy Sculpt is like modeling clay. They are all set rock hard if properly mixed, and they are extremely useful in model and figure sculpting. As for the blue thermoplastic, I have no information.

Thanks Gerald for your comments.
Regards Álvaro

Gerald's comments on putty are spot on. I will also add you can find green stuff/kneadatite from sellers on Amazon.com.

The thermoplastic is probably something like InstaMorph (https://www.instamorph.com/), available on Amazon or elsewhere. Another brand is ShapeLock.

Sean, Mark

Thanks for the data

Alvaro