Can someone please answer the following questions for me?
1. Tetrion - What is it? Is it Plaster of paris?
2. Polyfiber - Where can I get it?
3. Rubberized Horsehair - Where can I get it and What is it?
4. Plaster of paris - What is the best kind in terms of strength and carveablity?

Thank you

Wolf-Leader, I can only answer numbers 1,3 and 4.

1. Tetrion is a tough all purpose powder filler. It is water resistant, smooth and permanent. It is used to fill cracks in plaster, replacing decayed wood & repairing cement based rendering.

3. Rubberized Horsehair is/was used by furniture makers to stuff seat cushions in large chairs. I think you will mostly see that in older types of chairs.

4. I think that it doesn't really matter what plaster of paris you use. I suppose you could mix it with something to make it stronger but I think that for the most part it is all the same.