"DerbyDad03" wrote in message
...
As far as I can tell, the standard material for Cross Cut Sled runners is
hardwood and typically 2 are used. However, I saw a couple of plans that
use aluminum as the runners and even one that suggests a single miter
gauge bar as the only runner.

http://www.finewoodworking.com/item/...-crosscut-sled

I think I see advantages and disadvantages of all options, but I'd like to
hear your opinions.

"2 hardwood runners is the way that it's always been done" will not
automatically be considered an "advantage". ;-)


Aluminum might react with the steel of the table top over time if left
unused for a while in a humid environment. Anodizing the aluminum would
virtually eliminate that. Anodizing has the advantage of creating a hard
wear resistant surface on the aluminum parts. So, the correct answer is
adult diapers. (It Depends.)

To those who might argue about anodized aluminum, there are modestly decent
life desktop size CNC mills that have anodized aluminum wear surfaces.
Strictly hobby stuff, but still.