code ss 5060 made by silicone solutions of twinsburg ohio has the characteristics needed particularly an initial viscosity of 1 000 cps and is preferred for the interfacing adhesive layers 14 16 18 this glue is a room temperature curing self leveling and non thixotropic silicone it cures by an oxime reaction which does not emit by products that must be removed from the interface substrate 12 is held in a fixture a measured dose is applied at the center of this layer at room temperature as it will be for successive layers by measured dose it is meant that the exact amount or slightly more than enough glue is applied than required to form the desired thin uniform interlayer of glue any slight excess that exudes from the sides is wiped away or cleaned off using mineral spirits or the like the preferred glue is self leveling and non thixotropic the layer being added may be moved to obtain alignment glue may also be applied using a fine tipped brush with straight edge leveling at room temperature with either technique a uniform continuous interlayer is formed in either case the interlayer of adhesive is only 0 001 0 002 inches 0 025 0 050 mm thick and is bubble free it meets the harsh alternating and extreme temperature conditions of service relatively large area gobos up to 2 6 inches 66 0 mm in diameter have been fabricated using this technique development of full strength takes up to 72 hours at room temperature but can be significantly accelerated by heating to 150.