Below is a paste of a post by Ken Dolph of Sawmill Creek. He is the corian guru there for the Freedom Pen Project. I didn't ask his permission to post this but since he is one of the good guys, I'm sure he won't mind.
<<Since Corian gets soft when heated to 300 to 350 degrees F, you do not need to sand reasonably good cuts. Just heat the strips for 5 minutes in a toaster oven then stack between wooden blocks and clamp the assembly. When it has cooled, do not tighten clamp or remove, just glue in place with Cyberbond 2002. It will wick into the seams. Clamp may be removed after a couple of minutes and you can do it again. Leave assemblies alone for 24 hours for complete cure. Then cut and turn as usual.
For a more impressive effect you could make wavy stripes. You would do this by using a band or scroll saw to cut a shallow "S" in a piece of wood. Sand both sides of the cut smooth. Heat the Corian strips in a toaster oven set to 300 degrees F for about 5 minutes. More time for thicker strips. Put them on their side between the two blocks of wood. Then clamp the whole assembly together until the Corian conforms to the shape. When the Corian has cooled, glue the strips with Cyberbond 2002 while still clamped. It will wick between the layers. (Do not increase the clamp pressure) After 5 minutes remove the clamp and you can do it again with another set of strips. Leave each glued assembly alone for 24 hours. Then you can square the block and prepare for making a pen or whatever.
In the interest of full disclosure we sell the Cyberbond. Other wicking grade cyanoacrylates may work but I have not found another quite like it.
I hope you enjoy doing this
Ken>>