Fiberglassing
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====Vinyl ester==== | ====Vinyl ester==== | ||
This is a stronger version of polyester resin, and somewhere between polyester and epoxy in strength. It has the ease of workability of polyester and compliments the strength of fiberglass much better than polyester. Not usually needed in hotrodding. Vinyl ester is much more heat resistant than either of the polyester resins, and also chemical resistant. It also shrinks alot less, so print-through is less of a problem. If you want to easily make some very strong, rigid, and lightweight parts, use vinyl ester resin, along with either fiberglass mat or cloth, and add a layer of 6 oz carbon fiber in the middle of the laminate. | This is a stronger version of polyester resin, and somewhere between polyester and epoxy in strength. It has the ease of workability of polyester and compliments the strength of fiberglass much better than polyester. Not usually needed in hotrodding. Vinyl ester is much more heat resistant than either of the polyester resins, and also chemical resistant. It also shrinks alot less, so print-through is less of a problem. If you want to easily make some very strong, rigid, and lightweight parts, use vinyl ester resin, along with either fiberglass mat or cloth, and add a layer of 6 oz carbon fiber in the middle of the laminate. | ||
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| + | ==Cores== | ||
| + | There are also many cores available for use in FRP laminates, use of a core can increase the rigidity of a part without increasing the weight or tendancy of thick parts to get mottled after time and exposure to heat. Use a core anywhere you have a large flat or gently curved area, roofs, hood tops, floorpans, bellypans. The underside of fenders above the tires is a good place to use coremat, as it will provide a cushion against stars from rocks being thrown up by the tires. | ||
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| + | Some of the cores you can use are: | ||
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| + | ===Balsa wood=== | ||
| + | This is used in large flat areas and needs to be bedded in...not really a good choice but it is one of the oldest cores. Boatbuilders used it extensively for reinforcing large flat areas such as decks, hull bottoms and cabin roofs. | ||
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| + | ===Coremat=== | ||
| + | This is a material that looks similar to the absorbent paper shop rags that come in a roll. It's made with fiberglass and microballoons, along with a binder. It's much more flexible than balsa, and it comes in several thicknesses: 3mm, 5mm, and 8mm. This you lay up into your part, just like another layer of mat or cloth, then put another layer of mat over the top. | ||
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| + | ===Urethane foam=== | ||
| + | This comes in varying thicknesses, and is used much like balsawood. | ||
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==How much mat to use== | ==How much mat to use== | ||
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