On Wed, 26 Jan 2005 06:50:00 -0600, "D. J. Dorn"
wrote:

I'm afriad I have to be the voice of decent. I've tried oak, maple and
other hardwoods. They work great to begin with but if you make them to have
a good, tight fit, I discovered that weather does have an effect and they
weren't always smooth over time. I also tried the UHMV thing and found the
same thing as the others. Once they were screwed, they splayed out making
it difficult to get a good fit.

FWIW, I have used UHMW and I have used my brad nailer to attach pieces to
my MDF sleds. No spreading. When I have used screws, I have made an
over-deep tapers for the flatheads and sneak up the tightening on the
screws. I have actually found that by tightening/loosening the screws I
can adjust the fit, as needed. -- Igor