Cotronics Corp. (www.cotronics.com) says its new metal-filled, fast-setting epoxy makes repairs by forming a solid, aluminum layer that is machinable with standard tools. Instant Metal 7056Al adheres to smooth, rough or porous surfaces and cures at room temperature in four minutes to eight minutes without producing sulfur odors. The company says the epoxy is suitable for use at temperatures up to 450 F.