The glass in fiberglass cloth does not have a shelf life. The glass is inorganic. The sizing coating on the glass strands is an organic compound and has a definite shelf life. I use to teach this fiber glass stuff for the EAA Sport Air Workshops and still do at AirVenture.
Sid Wood Tri-gear KR-2 N6242 Mechanicsville, MD, USA ----------------------------------------------------------- > Sid said - Fiber glass cloth has a sizing coating on each strand to help > the epoxy > resin to bond to the glass. The shelf life for most fiber glass sizing is > five years. After that time the wetting out with the resin becomes more > difficult and will result in a weaker structure. The older the cloth the > worse the situation will be. > > I posted this question to the group some time ago and was told that there > is > no end shelf life on fiber glass cloth. Would someone in the industry, (If > there is someone in the group), please check in and clear this up. > > Patrick Driscoll > Saint Paul, MN > patrick36 at usfamily.net > www.pensbypat.com > If you can read this, Thank a teacher > If you are reading this in English, thank a veteran > >
