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	Balsa Facts
		Balsa is one of the few trees in the jungle which has a simple leaf shape.
		Nature evidently designed the balsa tree to be a "nurse tree" which would protect the slower-growing species of trees from the scorching jungle sun during their critical early years.
		In selecting balsa sheets for use in your model, it is important to consider the way the grain runs through the sheet as well as the weight of the sheet.
	www.mat.uc.pt /~pedro/ncientificos/artigos/techbal.html (2515 words)

	Airfield Models - Building Model Aircraft with Balsa Wood
		Balsa Wood is the traditional construction material used in flying model aircraft.
		Balsa is also available in some art and craft stores, but this is the most expensive source I've found as well as having the smallest variety.
		Balsa USA wood tends to be a little on the rough side, but I sand everything anyway so it's not a problem.
	www.airfieldmodels.com /information_source/construction_materials_for_model_building/balsa.htm (2117 words)

	Balsawood Structure Design
		Wood grain is composed of bundles of thin tubular components or fibers which are naturally formed together.
		Since balsa, like most woods, is high in water content, and the goal of this project is to win a weight versus load carrying capacity competition, the effects of baking out some of the water were tested.
		Often a vertical piece of balsa would bite in to a horizontal piece, thus creating a strong joint that was better than most glued joints simply because the material had compressed to form a sort of socket for the joint.
	www.literaturenotes.com /basementpapers/papers/stack41_2.html (2061 words)

	Balsa Wood: Why you might want to use it for Model Building
		Today balsa wood is overwhelmingly used in model aircraft building and in architectural/engineering models of many sorts.
		Balsa is a pale white to gray, nondescript wood, with little grain pattern.
		Wood that is 6 lbs or less is considered to be of "contest grade" for any of you who are into model airplane construction, and used for low stress components.
	www.thewoodbox.com /data/wood/balsainfo.htm (470 words)

	HairyLunch's Creative Problem Solving Page - Wood
		If balsa was uniform from density to density, the strengths for the 8 pound samples would be 80, while the 14 pound samples would be 140.
		Balsa wood is very porous and as a result picks up moisture from the air quite readily.
		Due to the nature in which balsa is cut, the wood labeled 1/8" by 1/8" does not always meet those dimensions.
	www.geocities.com /CollegePark/Campus/6697/CPS/structure1.htm (1622 words)

	Balsa - Wikipedia, the free encyclopedia
		The name balsa derives from Spanish for a raft.
		The density of balsa wood ranges from 100–200 kg/m³, with a typical density of about 140 kg/m³ (about one third the density of ordinary wood).
		Despite being very soft, balsa is classified as a hardwood, the softest commercial hardwood.
	en.wikipedia.org /wiki/Balsa_wood (147 words)

	ABCD's Bridge Design Tips for Kids
		Balsa wood is so light because the cells of the wood are big and very thin walled, so that the ratio of solid matter to open space is very small.
		Green balsa wood must be kiln dried to remove most of the water before it can be sold.
		If you are building a structure out of balsa wood (or any other wood for that matter) you should bear in mind that as a natural material its properties will vary considerably from piece to piece.
	www.abcdpittsburgh.org /kids/kids.htm (1270 words)

	Balsa Wood Bridge Info
		The roadway surface inside the bridge must be open to allow a block of wood which is one inch thick and two inches wide to pass through the entire length of the bridge roadway surface.
		When building your balsa wood bridge you should begin by using masking tape to attach your full size three-view sketch or drawing to a piece of foam board or cardboard.
		Balsa wood gets its great strength from its vascular system, a network of tiny tubes which transport nutrients and water throughout the tree.
	www.zimsweb.com /balsa/information/info.htm (1089 words)

	Wood Gliders
		During World War 2, balsa wood was considered to be a “strategic material”, so toy airplane production was reduced dramatically.
		Wood toy gliders have been with us for so many years because this non-flying flying saucer was the exception to the rule.
		One of the ever-present challenges for any wood glider pilot is to get the glider high enough in the air to ensure a long and graceful flight.
	www.oldwoodtoys.com /new_page_2.htm (3501 words)

	What is Balsa Wood?
		Balsa wood trees grow rapidly during their first five years, providing some shade to other plants with their oversized leaves.
		Because raw balsa wood has such a high moisture content, it must be dried in a kiln for at least two weeks before it can be used commercially.
		Balsa wood does have a grain, so consumers should be aware of what type of cut they need for a specific project.
	www.wisegeek.com /what-is-balsa-wood.htm (517 words)

	Nida-Core Honeycomb Structural Materials - Products - Balsalite
		The end grain configuration of balsa provides high resistance to crushing, and is very difficult to tear apart.
		Now, through controlled growing and careful selection, BalsaLite balsa wood is competitive in weight, as well as offering superior performance in stiffness and strength, particularly where local crushing or bruising is a concern.
		The balsa plant (Ochroma lagopus) grows from seedling to mature balsa tree in 4-6 years and reaches heights up to 25 m (90 ft) before dying in 8-10 years.
	www.nida-core.com /english/nidaprod_balsalite.htm (1918 words)

	Wood & Wood Products: Balsa -- Lightweight Wood Has Variety of Uses.(Brief Article)@ HighBeam Research (Site not responding. Last check: )
		BRING UP THE TOPIC of balsa wood and you are likely to inspire some snickers.
		While it is the lightest of the commercial hardwoods and unlikely to make anyone's top-10 list of fine cabinet woods, balsa has a long, proud history -- it was used in construction of the Allies' planes in World War II -- and is one of the most frequently imported woods to the United States.
		In World War I, balsa was used extensively in making life rafts and for packing armor plates for battleships.
	www.highbeam.com /library/doc0.asp?DOCID=1G1:73411496&refid=ip_encyclopedia_hf (227 words)

	Balsa Wood »
		My favorite article about Balsa wood was taken down, but I found a copy of it at Archive.org.
		Balsa increases in strength as the density increases, and the increase in strength is not a linear proportion.
		B grain Balsa wood lies somewhere in between A and C. A grain Balsa wood has long fibers across the entire length of the sheet.
	www.garrettsbridges.com /building/balsa-wood (844 words)

	Balsa 1/2x1/2x36'' (9) (mid6099) Midwest Building Supply Wood Balsa
		Balsa is the premier wood for all types of modeling projects.
		Balsa cuts easily with a hobby knife, and may be stained or painted to represent any wood type.
		Midwest's Balsa is carefully dried in special kilns, reducing the water content to leave a light wood with a high strength to weight ratio.
	www.hobbylinc.com /htm/mid/mid6099.htm (293 words)

	Glue Explanation Won't Stick (Site not responding. Last check: )
		Since wood has a cellular structure whose outer fibers can absorb liquid, some of its physical properties can undoubtedly be altered by immersing it in or coating it with glue.
		The data scatter present for each wood condition reflects the effects of such factors as nonhomogeneous wood composition, the probable small variation in beam cantilever length and force location relative to the fixed support, as well as slight differences in glue soak time and/or glue film thickness.
		The raw wood struts failed due to a combination of bending and horizontal shear stress, producing a long, diagonal break that extended away from the support along the length of the beam.
	www.cufos.org /IUR_winter97.html (2534 words)

	Balsa Wood (Site not responding. Last check: )
		Balsa wood is a fast growing lightweight wood grown in Central and South America, and is especially plentiful in Ecuador.
		In ancient times seafaring rafts made of balsa logs may have been used to sail from the Americas to Polynesia, a possibility dramatically demonstrated by Thor Heyerdahl's adventure sailing such a raft, the Kon-Tiki, from Peru to Tahiti in 1947.
		During the Second World War the DeHavilland company used it extensively for primary structures in the 400mph Mosquito fighter bomber, which was constructed from a core of balsa sandwiched between two thin layers of plywood, similar to the fiberglass skin and foam core structures used today.
	www.aa.washington.edu /glidercontest/balsa.html (244 words)

	Balsa -- Facts, Info, and Encyclopedia article (Site not responding. Last check: )
		The density of balsa wood ranges from 100-200 kg/m³, with a typical density of about 140 kg/m³ (about one third the density of ordinary wood).
		This makes it a very popular material for model making and buoyancy materials (lifebelts, etc), and was famously used by (additional info and facts about Thor Heyerdahl) Thor Heyerdahl in his raft (additional info and facts about Kon-Tiki) Kon-Tiki.
		Despite its softness, balsa is classified as a (The wood of broad-leaved dicotyledonous trees (as distinguished from the wood of conifers)) hardwood.
	www.absoluteastronomy.com /encyclopedia/b/ba/balsa.htm (149 words)

	End Grain Balsa Wood & Balsa Core Technical Information - End Grain Balsa Wood \| Balsa Core Supplier - Quality End ...
		End grain balsa wood is widely used and found in pleasure craft, trucks, trains, interiors, and other structural applications.
		Data and recommendations for Natural and Pre-primed balsa wood are derived from tests and experience but are provided without liability to the company.
		The balsa plant grows from a seedling to a mature tree in 4-6 years and reaches heights up to 90 feet before dying.
	www.balsasales.co.uk /technical_info.html (455 words)

	Chuck Bassett Surfboards \| Pristine Balsa Wood Classic Surfboards for the Surfboard Collector, San Clemente, CA
		It turned out to be a load of balsa wood and I got to help with building the first surfboard I had ever seen from start-to-finish.
		This is a small operation where only wood surfboards are made by hand from imported rough balsa wood lumber.
		Then the entire wood surface area is "pasted" with a styrene-thinned hot batch of laminating resin and set aside to dry for a day for two in preparation for being laminated.
	www.chuckbassett.com /this_about_that.htm (1830 words)

	Balsa Wood
		The best way to log balsa trees is to go back to the methods of Paul Bunyan - chop them down with an axe, haul them to the nearest river by ox team, tie them together into rafts, and then float the rafts of balsa logs down the river to the saw mill.
		At the saw mill the raw balsa is first rough cut into large boards, then carefully kiln dried, and finally packed into bales for shipment to the U.S. via ocean freighter.
		Balsa is occasionally found weighing as little as 41bs.
	members.aol.com /tigerlink/hint41.htm (2659 words)

	Building a 1948 Model Airplane Kit (Site not responding. Last check: )
		The parts are printed to minimize the amount of wood used and NOT to conform to the grain of the wood.
		Thin strips of balsa called Stringers are used to form the external shape of the plane.
		This skeleton is covered with tissue paper, fabric or thin sheet balsa to have the final appearance of the plane.
	www.jitterbuzz.com /navion.html (3096 words)

	balsa wood in speaker enclosures
		Balsa wood is too soft for use as a joint in an
		Balsa wood by itself is not very rigid.
		A thick layer of fiberglass then 2.5 inches of balsa then another layer of fiberglass, this is for a smoother quieter ride.
	www.decware.com /forums/General/posts/242.html (2039 words)

	Paulownia Wood Supply
		Balsa has been considered to have the highest strength to weight ratios of any wood in the world.
		Auburn University tested the strength of 18 lb p/cubic ft. against Balsa, with an average weight of 10 lbs p/cubic foot.
		Some Balsa core material is sliced at 3/8 inch with end-grained material.
	www.paulowniawood.com (469 words)

	Re: balsa wood in speaker enclosures (Site not responding. Last check: )
		The sound absorbing material had nothing to do with the structural rigidity of the car, but was there to keep engine compartment noises from entering the passenger cabin.
		Similarly, the balsa in the Corvette cannot add structural rigidity, but is only there to reduce sound transmission into the cabin.
		The real question is, Will the balsa wood strips along with internal bracing-again using the strips-and balsa as an additional lining material give me less vibrations and less resonance?
	www.decware.com /forums/General/posts/251.html (293 words)

	Wood - Tailfeathers Community
		They prefer chewing up the softer balsa wood to the harder types of wood that are in their toys, which has little evidence of chewing.
		Been giving them the balsa wood for almost a year now and my avian vet says it's fine.
		Balsa wood is a soft wood, that shreds rather than splinters, making it a good chew toy even for little birds.
	www.tailfeathersnetwork.com /community/showthread.php?t=24856&goto=newpost (159 words)

	Balsa Wood Crow at Hooting Yard
		If you are a mendicant, and cannot countenance frittering your paltry beggings on something as inessential as balsa wood, you may have to resort to theft.
		When you are done, and you compare your balsa wood crow with the picture you have probably been working from, you will notice that something is not quite right.
		If you made your crow using donated balsa wood and paint, it is good manners to write a letter to your benefactor, enclosing a snap of the wooden bird.
	www.hootingyard.org /?p=125 (1411 words)

	Carlsfeature (Site not responding. Last check: )
		Balsa and ply covered with.6 oz glass cloth and epoxy, enamel paint.
		Balsa and ply construction covered with.6 oz glass cloth and epoxy.
		Balsa, ply construction covered with epoxy, cloth and finished with silver polyester mylar tape scuffed for effect.
	www.rcwarbirds.com /feature3.htm (459 words)

	BridgeTalk (tm) Discussion Forum - "Balsa Wood Bridge" (Site not responding. Last check: )
		The bridge will be made of balsa wood, with wood 180 inches long, 1/8 inch wide and 1/8 inch thick, and with a piece of balsa wood that is 1/16 inches thick, 3 inches wide, and 12 inches long.
		Even if all of this wood is used to build the bridge, the bridge will not weigh more than 18 grams.
		Thin balsa wood is probably stronger in tension (pulling the ends apart) than compression (pushing the ends together).
	www.bridgesite.com /dcforum/DCForumID1/41.html (1005 words)

	Balsa Wood
		This cross section of balsa wood shows the large conductive elements that give balsa an outstanding strength-to-weight ratio.
		Balsa wood is lightweight, absorbs shock and vibration well, and can be easily cut, shaped, and glued.
		The word balsa means raft in Spanish, and in Ecuador it is known as Boya, meaning buoy.
	www.astrographics.com /cgi-bin/ase/ase.cgi?affiliate=&mode=display&gallery=3&type=&color=&keywords=&page=4 (182 words)

	Balsa Wood (Site not responding. Last check: )
		The climate in the jungle area has a constant humid temperature all year round.The balsa wood tree is the lightest wood in the world.
		South America has the best balsa wood in the world because of it's colour, light weight, and stable workable qualities.
		Using a hot wand or needle the outlines of the animals are etched into the balsa wood.
	www.riley.com.au /balsa_wood.htm (375 words)

	Balsa Wood Gliders
		The student will observe the "flight" of a balsa wood glider that they make themselves.
		In this way the student will have a small taste of what the dynamic is when a person is actually in a man size glider.
		The size of the glider that the student will make out of balsa wood will be approximately 12 to 15 inches wide.
	wings.avkids.com /Curriculums/Vehicles/balsa_summary.html (1009 words)

	Quality Balsa Wood Source? - RC Groups
		I have to order a bunch of balsa wood and hobby plywood for some school projects I'm running.
		I ordered non-contest balsa from lonestar and found it to be not only dense, but pretty heavy.
		I'm no expert in balsa, but it looks pretty good to me and is the equal to any found in the kits I have.
	www.rcgroups.com /forums/showthread.php?t=43442 (661 words)

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