Archived posting to the Leica Users Group, 2002/04/18
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]There are several types of pressed board. I do not remember their specific names, in fact I seldom use them. Some are made of wood chips, and some of saw dust (these days very little is wasted in the lumber industry). They are bonded with glue under high pressure. Dimensionally, pressed board is very stable when kept dry but is brittle and can break easily when compared to plywood. The strongest type (used in construction) is the one made of chips rather than saw dust. An other weakness is that water will deteriorate all of them very rapidly. The saw dust types are used extensively in furniture today (Sam Maloof does not). Joe Codispoti From: "Javier Perez" <summarex@yahoo.com> > I was wondering if anyone knew how pressboard holds > together. I understand that stacks of wood chips are > pressed together with enormous pressure but does the > pressure itself cause the chips to bond together? I > can't imagine that to be the case, but then again I > can't find any evidence of any bonding agent among the > chips. Do they use a powder or something? Whatever it > is, the bond is enormously strong if you consider how > many books you can stack on a shelf made of 5/8" > board. - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html