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Exceptionally lightweight and incredibly easy to work with, balsa wood is a favourite among hobbyists, model makers, and crafters. We offer premium balsa products ideal for building models, prototypes, crafts, and other precision projects that require a soft, workable material with minimal weight. Despite its softness, balsa boasts impressive strength-to-weight ratio, making it perfect for delicate constructions like architectural models, RC aircraft, and custom displays. It cuts, sands, glues, and finishes effortlessly, allowing for detailed, accurate work—even with hand tools. As a proudly Canadian company, Windsor Plywood is known for sourcing hard-to-find materials and providing expert, personalized service. Whether you're a seasoned model builder or just getting started, our selection of balsa wood helps bring your ideas to life—light, precise, and beautifully easy to shape.
Frequently Asked Questions
What is balsa wood and what is it used for?
Balsa (Ochroma pyramidale) is a tropical hardwood from Ecuador and Central America that is the lightest commercial wood available, with a density of approximately 120 kg/m3 — far lighter than most softwoods. Despite being classified as a hardwood botanically, balsa is extremely soft and is used for model making, RC aircraft, surfboard cores, marine sandwich core construction, and lightweight craft applications where extreme low weight is the primary requirement.
Why is balsa used in model aircraft and RC building?
Balsa's very low density combined with adequate stiffness for its weight makes it ideal for model aircraft frames and structures where minimizing weight is essential. It cuts cleanly with hobby knives, sands easily, and glues with cyanoacrylate or balsa cement. Its workability with simple hand tools makes it accessible to hobbyists without power equipment.
Is balsa structurally strong despite being so light?
Balsa has a remarkably high strength-to-weight ratio for its density, which is why it is used in sandwich panel construction for marine and aerospace applications. However, its absolute strength values are very low compared to other woods. It dents and compresses easily under point loads and is not appropriate for any structural application where hardness or impact resistance matters.
What dimensions does Windsor Plywood carry balsa in?
Windsor Plywood carries balsa in sheets and blocks suited for model making and craft applications. Standard thicknesses include 1.5mm, 3mm, 6mm, and sheet sizes commonly used in model building. Availability varies by location. Contact your local Windsor Plywood branch to confirm current balsa stock.
How do I glue and finish balsa?
Balsa bonds well with cyanoacrylate (CA) glue, PVA wood glue, and balsa cement. CA glue is the fastest option for model building. For finishing, balsa requires sealing before painting as its porous surface absorbs large amounts of paint. Sanding sealer, doping, or a thinned coat of PVA applied before paint significantly reduces absorption and produces a smoother finished surface.