-----Original Message----- From: Aaron Christopher Finney [mailto:af-list@is1.wfi-inc.com] Sent: Monday, November 15, 1999 8:22 PM To: Discussion re-collecting of classic computers Subject: Fireproofing questions Hi all, .. I placed a hot clothes iron on the outer wall and measured the temperature/rate of climb on the inner wall, as well as the ambient temperature inside the cabinet. It was enough that, even with a comparatively small heat source (well, to a garage fire, anyway), anything within a few inches of the inner wall would have most definitely been damaged, and possibly items close to the center after a half-hour of exposure to the heat source. Aaron asks: is there something anyone could recommend that would make a good lining for the inner walls of the cabinet to insulate it from heat? Drywall/ sheetrock/ Gypsum Board. Clipped or cemented in place. Its common, Its Flat, the Gypsum part wont flame. Its Fire rated. The expanding foam is definately NOT what you want. Its chemical composition provides fuel and oxygen to fire. If you have voids to fill - Plaster? OR High Density FiberGlass Panels as in Commercial Drop-Cieling Panel Tiles. This stuff is densely pressed, (Often embossed with a pattern) The Commercial grade panels are somewhat rigid - but also fire rated for close proximity to commercial lighting. Note the stuff is pressed class fiber - Not impregnated, bound, or laminated with epoxy or polyester resin. The resins also support Flame with out need of too much oxygen.