Patt wrote:
I am using uhmw strips for the runners on a t/s sled. How would you join
them to the wood base?

Screws work for me with UMHW.

I usually use maple, birch, or white oak for runners, which I attach
with standard wood glue while the whole shebang sits in the slots.
After the glue dries, I add a few countersunk screws.