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Mostrando las entradas etiquetadas como Wood

1ºESOen - Plywood and chipboard manufacturing process

Plywood is a wood-based panel product comprised of a collection of veneers that are glued together with a resin. To sum up the production process; logs are peeled into veneers, the veneers are lathered in glue, laid up so that the grain direction of each veneer is perpendicular to its adjacent veneer, pressed together, trimmed and sanded. Chipboard is an engineered wood product manufactured from wood chips, sawmill shavings, or even sawdust, and a synthetic resin or other suitable binder, which is pressed and extruded.

How pencils are made?

This film shows how pencils are made from graphite, clay and wood at the production site of Faber-Castell. Answer these questions:  Who spoke well   of   pencils 120 years ago? What mineral is used in the pencil leads? How do we made pencils with different hardness? Why do we bake the leads? Talking about pencils, what is a sandwitch?