Bussey A scientists war – the diary of Sir Clifford Paterson 1939–45 R.J. Morris Wireless: the crucial decade 1924–34 G. Callick A history of the world semiconductor industry P.R. Earl The GEC research laboratories 1919–1984 R.J. Burns Vintage telephones of the world P.J. Swords British television: the formative years R.W. Black Technical history of the beginnings of radar S.S. The history of electric wires and cables R.M. Volume 15 Volume 16 Volume 17 Volume 18 Volume Volume Volume Volume Volume Volume Volume Volume Volume Volume Volume Volume Volume Other volumes in this series: Volume Volume Volume Volume Volume Volume Volume Volume Volume
#Cavorite sphere resin kit series
Do not allow to fully cure, as delaminating may result between gel coat and back fill mixture.IET History of Technology Series 33 Series Editors: Dr B. Over brushing will result in a damaged casting.Īfter you stop brushing, allow the gel coat to partially cure for 5 - 10 minutes.
Once you feel the material starting to 'gel' or 'stick', stop brushing. Immediately begin brushing the material around the mold cavity creating a ''gel coat.'' The mixture will continue to thicken as you brush. Make sure you scrape any residual bronze powder from the cup. Continually scrape the bottom and sides of the mixing container while stirring to keep the metal powder from settling on the bottom. Sift in Bronze Powder to the resin and mix all components for 30 seconds. Parts A and B are mixed thoroughly for 15 seconds. The tinted Part B is combined with Part A.
Part A is added to a clean mixing container. The tint is thoroughly mixed into Part B prior to combining with Part A. Two drops of So-Strong® Black tint are added to Smooth-Cast® 325 Part B. Equal amounts of Part A, Part B and bronze powder are ready to be combined. Dispense an equal volume of bronze powder. Smooth-On metal powders are -325 mesh and mix easily into Smooth-Cast® 325 resin. Then dispense an equal amount of Smooth-Cast® 325 Part B. Dispense the required amount of Smooth-Cast® 325 Part A into a measuring container. Stir or shake both Part A and Part B thoroughly before dispensing. The cured resin casting is removed from the mold and the bronze effect is brought forth by buffing the surface with steel wool. More resin is then poured directly on top of the gel coat (back filling.) The gel coat and back fill mixture is allowed to cure. A "gel coat" layer is applied first to the rubber mold cavity. Specifics - Cold Cast Bronze Example - This step-by-step example will detail making a cold-cast metal casting using bronze powder. The gel coat is then back-filled with straight resin, resin mixed with metal powder, resin mixed with lead shot (for weight) or Foam-iT!™ 5 rigid foam to yield a light weight casting.
The mixture is then brushed into the mold cavity until the resin cures. To make a metal cold-casting, metal powder is mixed into the resin until the mixture is thick and creamy. The metal cold-cast process (also known as "bonded bronze") is faster and much less expensive compared with foundry casting of molten metal (lost wax process.) Different metal powders such as Bronze, Brass, Nickel Silver, Copper and Aluminum can be used depending on the desired effect. "Cold-Casting" is a term used to describe the process of mixing metal powder with a resin to create castings that give the appearance of solid metal.
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