Aircraft grade plywood, often baltic birch, is made from three or more plies of birch, as thin as 1. Department of agriculture summary plywood is manufactured by bonding thin sheets of wood veneers together with adhesives in such a way that the mechanical and physical properties of. Aircraft grade birch plywoodbuilding materialsdesert. Aircraft plywood is made with lightweight, durability, and resistance to heat and humidity in mind. Aircraft plywood can also be used in the making of musical. Tim wood, aircraft plywood and timber llp ta swindon aircraft timber company tel. Aircraft plywood is suitable for all types of models, including use in architectural models, model boats and aircraft. They were looking for a type of wood that would be relatively lightweight in addition to being very strong. Directory of aircraft plywood manufacturers provides list of aircraft plywood products supplied by quality aircraft plywood manufacturers, suppliers and wholesalers.
Plywood is classified according to the grades of the surface veneers, which are set out in european standard en 635 en 6351, 1995. It features an unfinished surface that you can stain, paint, and otherwise embellish with items like beads and sequins. System three t88 epoxy is a 2component, epoxypolyamide adhesive and is the most popular and likely the best choice for gluing wood aircraft and boats. Guidelinewood ijoist asd manual for engineering wood. Awb 0211 timber, plywood and adhesives for aircraft use. The applicable section properties table c can be divided into load capacity to determine design strength and stiffness. Explore the vast array of fun wood projects that you can do using craft plywood. This is a package of 6 microcut aircraft grade birch plywood 116 x 6 x 12 sheets by midwest products company. The sheets are tested in accordance with a protocol agreed with the engineering department of the light aircraft association laa. There is a huge difference in birch and poplar, but some things i have found.
We can manufacture almost all kinds of aircraft models and accessories. Aircraft spruce canada supplies components for a wide variety of homebuilt aircraft and discount pilot supplies. This kind has three layers of veneer and is layered enough to be strong and durable but can look more decorative than plywood with more plies, making it a good choice for indoor use. Birch plywood sheets are cut from a premium quality grade product. Premium plywood is used in the model aircraft, light aircraft, display and exhibition, tlescopes, furniture, toys and souvernirs. Essentially surface veneers are classified according to the presence of knots and other visible defects such as. Wood was the material of choice for aircraft construction into the 1930s. Tolerances for commercial grade washers are much larger than for precision washers. No problem, just order some 14 birch plywood right. Finnish birch aircraft plywood metric aircraft spruce. They were looking for a type of wood that would be. Aircraft plywood can be very thin birch plywood or hardwood plywood. From the very beginning of aviation wood has been used in aircraft construction. Because these values are plywood specific, the appropriate panel grade and construction adjustment factors, c.
The ab grade means that the a side does not allow too many defects where the b side allows for more defects. Plywood aircraft birch plywood grade 1525 x 1525 x 1. They have a wide variety of sizes, grades and plys. Thin plywood takes paint and varnish well and is available in aircraft grade birch and microlite poplar. Most of the airplanes built during world war i wwi were constructed of wood frames with fabric coverings. Subsequently, plywood has been used in construction, interior furnishings and even aircraft stark et al. It is aircraft grade milp6070 i which i have found it really isnt so much about the wood as it is about the glue. However, if youre not an experienced plywood shopper, the numerous options at the hardware store can seem overwhelming youll find various prices matched with multiple materials, ply, sizes, veneers, grades, and more. Quality birch aircraft grade plywood produced to abb grade on all thicknesses.
Because these values are plywoodspecific, the appropriate panel grade and construction adjustment factors, c. Load capacities in table a are based on normal duration of load for untreated panels under dry conditions. Timber and plywood birch craft grade birch plywood 0. Look at the webpage and what they have is birch and poplar plywood. One of the test that it must pass is the ability to withstand 3 hours of boiling in water.
Aviation grade plywood is manufactured to a number of specifications including those outlined since 1931 in the germanischer lloyd rules for surveying and testing of plywood for aircraft and milp607, the latter of which calls for shear testing after immersion in boiling water for three hours to verify the adhesive qualities between the plies. High quality birch veneer is ideal for painting, staining, stenciling, and wood burning. Available in aircraft grade birch, milled thinner for making radio control model aircraft and model grade birch, a little thicker and recommended for model airplanes and boats, crafts, miniatures, kites, etc. This plywood is your answer to any projects that may require the sturdiness of thicker plywood where the weight of regular plywoods just wont do. Timber is readily worked by hand, using simple tools and is, therefore, far cheaper to use than metal. Midwest products 5121 aircraft grade birch plywood sheet. However, baltic birch has the odds stacked in its favor much better than other plywood, chiefly in 12. The plywood panels are divided into two grades gl i and gl ii.
Because these values are plywoodspecific, the appropriate panel grade and construction adjustment. Aircraft failures have been recorded where the cause was cited to be poor glue selection during construction. In table 1 the general properties and characteristics of casein, bloodalbumin, and animal glues used in aircraft are listed. Aircraft wood information page 1 of 8 wood is used throughout the world for a wide variety of purposes.
Baltic birch is not immune, its still a wood product. Manufacture and general characteristics of flat plywood 1 2 forest products laboratory, forest service u. Birch plywood has proved itself to be one of the most rational ways of wood. Plywood is a board material constructed from an odd number of usually three, five, seven, etc. Often it is generic eg aircraft grade spruce, grade a spruce, birch ply etc. The span rating provides a measure of the strength and stiffness in the direction parallel to the grain of the face and back veneers of the panel. Just picked up order from aircraft spruce and spec.
Finnish birch plywood is furnished in 48 x 48 sheets, depending on current availability. Meanwhile, other industries are beginning to evaluate the benefits of. H21 concentrated aircraft exterior surface cleaner usage areas. Councils allowable stress deign asdlrfd manual for engineered wood construction. Cabinet grade will have voids in the inner layers, where you cannot see them, making the plywood weaker. It features an unfinished surface that you can stain, paint, burn, and adorn with items like beads and sequins. For sheathing grade panels that will be exposed permanently to the weather, specify apa rated sheathing exterior cc exterior under ps 1.
Sheets of 600 x 300mm available in thicknesses of 1. This is a package of 6 microcut aircraft grade birch plywood 14 x 6 x 12 sheets by midwest products company. Plywood design specification trio forest products, inc. Aircraft grade plywood is made to aircraft specification milp6070, nsn 5530. Aircraft wood and structural repair wood was among the first materials used to construct aircraft. The plywood veneer face plies and inner plies are free from open defects and bonded with heat set phenolic water and fire proof adhesive. Some mechanical properties of plywood produced from eucalyptus, beech, and poplar veneer bekir cihad bal 1, ibrahim bektas1 abstract in this study, we determined the flexural properties and tensile shear strength of fiveply plywood panels produced with eucalyptus eucalyptus grandis, beech fagus orientalis, and hybrid poplar. Designed specifically with aviation craft projects in mind. Explore the vast array of fun wood projects that you can do with this craft plywood. In addition to strength, modulus of elasticity and shear modulus the density and section. Actual structural plywood has a more limited history with first mentions made in the 18th century.
There is a huge difference in birch and poplar, but some things i have found make it sound like all birch ply made in the usa are combined with either poplar or basswood, which. Plywood free delivery possible on eligible purchases. Aircraft plywood is paper thin, yet it has a high strength to weight ratio and is a very flexible sheet of plywood. Aviationgrade plywood is manufactured to a number of specifications including those outlined since 1931 in the germanischer lloyd rules for surveying and testing of plywood for aircraft and milp607, the latter of which calls for shear testing after immersion in boiling water for three hours to verify the adhesive qualities between the plies. All plywood runs the risk of warping, and the most common type of warp in plywood is bowing.
Thin plywood is ideal for all woodworking projects. See treated plywood page 18 for recommended plywood grades and exposure durability classifications in applications requiring fireretardanttreated or preservativetreated plywood. Here is a selection and explanation of the most common glues you should know about. Buy midwest products 5121 aircraft grade birch plywood sheet, 6 x 12 inches. Today finnish processed birch plywood is one of the most advanced.
An ultralightweight panel, with a consistently fine surface, yet strong with excellent bending properties. Featured best selling alphabetically, az alphabetically, za price, low to high price, high to low date, new to old date, old to new. Ok, i am ready to buy my wood plans built hatz classic. It is stronger for its weight than any other material excepting certain alloy steels. All categories aircraft plywood mahogany and poplar plywood aircraft grade milp6070 view items download pdf download pdf printable page email this page save to favorites.
Part of the reason was the slow development of strong. Plywood is a necessity for many projects, from building cabinetry in the laundry room to building your dream gazebo in the backyard. The thickness of the sheets are in metric measurements which have been converted to english equivalents, as is all aircraft grade plywood. Full sheets require truck shipment unless cut in half for ups. As the name indicates, aircraft plywood were used for aircraft construction through world war ii. The applicable section properties table c can be divided into load capacity to determine. En 6353, 1995 and its counterpart elsewhere in the world. Aircraft wood information light aircraft association. These standards have evolved over time from earlier documents ohalloran 1979, 1980. The build and repair data for an aircraft will usually specify the timber and plywood required and to what specification. Mahogany and poplar plywood aircraft grade milp6070 on. Early aircraft designers and builders often used ash or hickory. Propeeties of aircraft glues the principal adhesives of proved value for making wood joints in aircraft are casein glues, bloodalbumin glues, and animal glues when properly protected against large moisture changes.
As the name indicates aircraft plywood is used in the manufacture of aircraft but also boats, furniture, model airplanes, model boats, doll houses, boomerangs and other toys, musical instruments, fine packaging e. A popular wood for all types of woodworking projects. Aircraft plywood is glued with better glues,it cannot have voids in the inner layers. Satco grade a and b plywood is manufactured by a mill well versed in producing top quality aircraft plywood that is able to meet the gl1 specification. Use it for general woodworking, crafts, school projects, painting, and models. Several aircraft builders use marine grade plywood in aircraft construction.
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