Had a client that needed a durable router template. I ended up making it out of corian.

[ame=http://www.youtube.com/watch?v=B-PNhOGjJT8]DIY Corian Router Template - YouTube[/ame]

I used a [ame="http://www.amazon.com/gp/product/B00004T7JZ/ref=as_li_tf_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B00004T7JZ&linkCode=as2&tag=kronosrobotic-20"]Freud router bit[/ame].

I cut at 50IPM 7,500 RPM, .17" cutting depth.