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A stick & tissue balsa model airplane under construction, still manufactured by Guillow's. During World War II, the supply of balsa wood was diverted to the war effort for the manufacture of rafts and life jackets. Guillow's was forced to use alternative materials like cardboard or pine wood to manufacture the model kits.
The second raft, La Balsa (Spanish for The Raft), featured a balsa wood and hemp rope built structure, to which was attached two hardwood masts, to support a square canvas sail. [3] In contrast to the oar used for steering on Kon-Tiki, the La Balsa featured a hardwood moving keelboard (known as Guaras in Ecuador) which allowed it to be actively ...
Building balsa wood bridges as a part of a unit on statics, structures, forces, or construction trades is used by teachers to make the learning environment hands-on and to give students a real-world example of material covered in class. The building of balsa-wood bridges is often used as an educational technology. It may be accompanied by a ...
Three different sizes of balsa wood stock. Balsa lumber is very soft and light, with a coarse, open grain. The density of dry balsa wood ranges from 40 to 475 kg/m 3, with a typical density around 160 kg/m 3. [5] [6] [7] Balsa is the softest wood ever measured using the Janka hardness test (22 to 167 lbf). [8] The wood of the living tree has ...
The long-term buoyancy of balsa logs has been called into question. Prior to the voyage across the Pacific Ocean of the Kon-Tiki in 1947, scholars often argued that balsa logs absorb water so quickly that long voyages were infeasible. Heyerdahl, however, used green balsa wood logs for a voyage of 101 days on the Kon-Tiki.
F1B Model by Stepan Stepanchuk. Free flight is the segment of model aviation involving aircraft with no active external control after launch. Free Flight is the original form of hobby aeromodeling, with the competitive objective being to build and launch a self controlling aircraft that will consistently achieve the longest flight duration over multiple competition rounds, within various class ...
Wooden house with wooden furniture, spinning wheel, loom and various tools Artists can use woodworking to create delicate sculptures. Woodworking is the skill of making items from wood , and includes cabinetry , furniture making, wood carving , joinery , carpentry , and woodturning .
Oil painting is a painting method involving the procedure of painting with pigments combined with a drying oil as the binder. It has been the most common technique for artistic painting on canvas, wood panel or copper for several centuries. The advantages of oil for painting images include "greater flexibility, richer and denser color, the use ...