Are they wood or something else?

[mydog'sslave]

What are the contrasting thin stripes between different colors,shapes in those fancy risers? If they are wood, which species bends easily and if it's some kind of plastic, where do I get it?

[macbow]

Could be phenolic, fiberglass or some type of wood.
Using phenolic or synthetic strips will add strength to risers.
One place that carries these supplies,is Binghams  bow supplies.

[macbow]

Try here.
 http://www.binghamprojects.com/

[mydog'sslave]

Thanks.  I'll give it a try.  This is a great site, Thanks to all.

[Robertfishes]

i used zebrawood and a bunch of red and black 050 fiberglass in this riser  

[Robertfishes]

this one has 3 pieces of 040 brown fiberglass between each piece of Bubinga  

[Dimondback]

1/8" Black and red phenolic (I belive it is made from linen impregnated with some type of polymer..) from KennyM on this site laminated between Grey actionwood/dymondwood. Relitively easy process...cut your riser block in half, epoxy all sides, clamp together and throw in the bow oven for a few hours. Then just shape the riser as you normally would.