On Mon, 24 Sep 2007 20:05:23 -0600, "Warren Weber"
wrote:

Also comes with both sides smooth and I think this is called Tempered
Masonite and is much harder. W


Both tempered and non-tempered hardboard can be found in the S1S
configuration. That is from my own experience.

Whether one or two sides are smooth is a function of whether the sheet
was manufactured by the wet or dry process. That is from the following
reference:: http://en.wikipedia.org/wiki/Hardboard

Tom Veatch
Wichita, KS
USA