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Fiberglass over Wooden Boat – Worth or not?

June 3rd, 2010

molitva leyli

Fiberglass on New and Old Wooden Boat

There are two dimensions to this question. The first is whether or not to fiberglass over wooden boat in new wooden boat construction. The second is whether or not to fiberglass over an old wooden boat. The first is a common practice in stitch and glue construction. The second is not as common but is sometimes used to extend the life of some older boats that have structural problems.

Technical Procedure Fiberglassing a Wooden Boat

The normal procedure in stitch and glue construction is to glass over all the seams of the boat with fiberglass and epoxy. Then the exterior of the boat is often sheathed in fiberglass. There is nothing wrong with this. The normal technique in stitch and glue construction is to coat all of the wooden boat in epoxy, which effectively completely seals the wooden boat. This stabilizes (more…)

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Fiberglass Boat Material and Building

June 3rd, 2010

molitva leyli

Fiberglassing a Boat using Epoxy Resin

If you have not worked with GLEN-L Poxy-Shield epoxy resins, or you have applied fiberglass before using polyester resins, make sure you read and understand all of the following information before starting any aspect of the job or handling any materials. Epoxy resin works and handles differently from polyester.

ABOUT THE RESIN – RESIN FIBERGLASS

The Poxy-Shield epoxy resin consists of 2 PARTS. These are to be mixed according to the ratios given on the containers; 5 parts A (resin) to 1 part B. (hardener). DO NOT VARY THE RATIOS. Do not add solvents or thinners. Sanding between coats of resin is not absolutely necessary to achieve a bond (although some sanding may be required as will be explained later). Note: Resin without hardener is NEVER used. Always add hardener in (more…)

Posted in BUILDING boat ship yacht, MATERIAL boat ship yacht vessel pontoon

Tags: boat coat, building fiberglass boat, coating fiberglass, Fibergalss cloth, fiberglass boat, fiberglass boat building, fiberglass boat material, fiberglass coat, fiberglass joint, fiberglass lap, fiberglass material, fiberglass safety, fiberglass works safety, Fiberglassing Boat, finishing fiberglass, handling resin, hardener, mixing hardener, mixing resin, resin and hardener, Resin application, resin mixing, resin mixing instructions, using Epoxy Resin, work with fiberglass

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Build Fiberglass Boat – Fiberglass Boat Building Steps and Materials

June 2nd, 2010

molitva leyli

Fiberglass Material Composition

Fiberglass material usually used for boat production because of its ability to reuse the female mold as a basis to form a fiberglass boat. The resulting structure of fiberglass boat is strong in tension but often need to also be placed with a weight of many layers of resin-saturated fiberglass or reinforced with wood or foam to provide rigidity.

Fiberglass (Glass-reinforced plastic or GRP) - GRP hull largely free of corrosion, although usually not fireproof. This can be fiberglass solid or sandwich (Cored) type, where the core of balsa, foam or similar material is applied after the outer layer of fiberglass is laid to the mold, but before the inner skin laid.

Glass fiber, core material for building fiberglass boat.

This is similar to the following types, composite, but is not usually classified as a composite, because the core material in this case does not provide much additional strength. Indeed, increased stiffness, which means that less resin and fiberglass cloth (more…)

Posted in BUILDING boat ship yacht, MATERIAL boat ship yacht vessel pontoon

Tags: boat building processes, boat hull molding, boat mould design, build fiberglass boat, coarse fiber, creating fiberglass boat, fiberglass boat, fiberglass boat material, fiberglass boat mold, fiberglass catalys, fiberglass cloth, fiberglass composite, fiberglass composition, fiberglass core, fiberglass material, fiberglass molding, fiberglass molding design, fiberglass sandwich, fiberglass solid, Glass-reinforced plastic, GRP, mold boat hull, mold surface lubricant, molding fiberglass boat, plywood mould, polish mold surface, resin for fiberglass, roving, steps creating fiberglass

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Aluminum Alloys Spec for Hulls Frame, Hull Plating, Deckhouse and Cabin

May 22nd, 2010

molitva leyli

Hull Plating

The majority of aluminum personnel boats are fabricated of 5456-H321 sheet and plate 0.188 to 0.375 in. thick, and 5456-Hlll or 6061-T6 extruded shapes. Alloy 5086 is also widely used for hull plating. Cabins are normally of 5052 sheet 0.125 to 0.25 in. thick, and 6061 extrusions.

Extrusions of 6061 or 6063 are used for structural and decorative sections, such as keels, chines, gunwales, and (more…)

Posted in BUILDING boat ship yacht, MATERIAL boat ship yacht vessel pontoon

Tags: 5456-H321, 5456-Hll, 6061-T4 sheet, 6061-T6 extruded, Alloy 5086, aluminium, Aluminum, aluminum alloy for boat, aluminum alloy spec, aluminum alloys for hull, aluminum specification for boat, corrosion resistance, lighter hull weight, sheet, stretch forming, welded 6061-T6

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Aluminum Series Alloys Specification for Boat Ship Yacht

May 22nd, 2010

molitva leyli

Aluminum Alloys Specification for Marine Vessel

The 5xxx series alloys used for the majority of commercial marine applications have weld yield strengths of 100 to 200 MPa. These aluminum-magnesium alloys retain good weld ductility without postweld heat treatment, and they can be fabricated with normal shipyard techniques and equipment. The weldable aluminum-magnesium-zinc alloys are also receiving attention in this field. The corrosion resistance of the 5xxx series alloys is another major factor in the selection of aluminum for marine applications. Tensile strength reductions in 10-year sea-water corrosion tests of 1.62mm (0.064-in.)-thick bare sheet specimens are only 2 to 5%.