there are generally three main steps to leather production: preparation, tanning, and crusting/finishing. Preparation includes anything that cleans or changes the product from raw skin to a usable material – hair removal, stretching, softening, and bleaching.
Tanning makes the prepped and cleaned skin water-resistant and durable.
The final step in leather production is crusting, which means to add finishing touches or make final alterations depending on how the leather will be used. Crusting can mean any combination of thinning, lightening, dyeing, buffing, and polishing.
Video http://www.youtube.com/watch?v=_0ovw-IAnTk
The manufacturing steps for construction and industrial plywood are basically the same all species. Plywood is manufactured with an odd number of layers, each layers consisting of one or more sheets of veneer. The layers are glued together with the grain of adjacent layers at right angles.
Mesh consists of semi-permeable barrier made of connected strands of metal, fiber, or other flexible/ductile material. Mesh is similar to web or net in that it has many attached or woven strands.
Video http://www.youtube.com/watch?v=-O96SpsJOyQ&feature=related
Hessian
Hessian is a woven fabric usually made from skin of the jute plant or sisal fibres, or may be combined with other vegetable fibres to make rope, nets, and similar products. Gunny cloth is similar.
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