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2. Tree-free paper - Wikipedia

   en.wikipedia.org/wiki/Tree-free_paper

   Tree-free paper, also known as no tree paper, offers an alternative to traditional wood-pulp paper [1] due to its unique raw material [2] composition. This type of paper is considered more eco-friendly especially when evaluating its entire life cycle. Sources of fiber for tree-free paper [3] [4] [5] Tree-free paper fibers are derived from ...

3. Paper model - Wikipedia

   en.wikipedia.org/wiki/Paper_model

   Printable sheet to make a metro train of the Valencia Metro (Venezuela). This may be considered a broad category that contains origami and card modeling. Origami is the process of making a paper model by folding a single piece of paper without using glue or cutting while the variation kirigami does.

4. Wood-free paper - Wikipedia

   en.wikipedia.org/wiki/Wood-free_paper

   Wood-free paper is paper created exclusively from chemical pulp rather than mechanical pulp. [1] Chemical pulp is normally made from pulpwood, but is not considered wood as most of the lignin is removed and separated from the cellulose fibers during processing, whereas mechanical pulp retains most of its wood components and can therefore still be described as wood.

5. Tree structure - Wikipedia

   en.wikipedia.org/wiki/Tree_structure

   A tree structure, tree diagram, or tree model is a way of representing the hierarchical nature of a structure in a graphical form. It is named a "tree structure" because the classic representation resembles a tree , although the chart is generally upside down compared to a biological tree, with the "stem" at the top and the "leaves" at the bottom.

6. Binary space partitioning - Wikipedia

   en.wikipedia.org/wiki/Binary_space_partitioning

   A BSP tree is traversed in a linear time, in an order determined by the particular function of the tree. Again using the example of rendering double-sided polygons using the painter's algorithm, to draw a polygon P correctly requires that all polygons behind the plane P lies in must be drawn first, then polygon P , then finally the polygons in ...

7. Paper craft - Wikipedia

   en.wikipedia.org/wiki/Paper_craft

   Paper craft is a collection of crafts using paper or card as the primary artistic medium for the creation of two or three-dimensional objects. Paper and card stock lend themselves to a wide range of techniques and can be folded, curved, bent, cut, glued, molded, stitched, or layered. [1] Papermaking by hand is also a paper craft.