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Most of the creases in a stretched bird base are present in the regular bird base. When forming this bird base, make sure to crease the triangle at the center corner through all layers. (If you unfold completely, you will see a small square at the center of the paper.) After forming the bird base, either partially unfold the paper, and/or ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 21 January 2025. Device to open or close door Various examples of door handles throughout history A door handle or doorknob is a handle used to open or close a door. Door handles can be found on all types of doors including: exterior doors of residential and commercial buildings, internal doors, cupboard ...
Linenfold (or linen fold) is a simple style of relief carving used to decorate wood panelling with a design "imitating window tracery", [1] "imitating folded linen" [2] or "stiffly imitating folded material". [3] Originally from Flanders, the style became widespread across Northern Europe in the 14th to 16th centuries.
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Venetian window handles – are typically fixed by two bolts. Also have a low projection from the frame. Espag window handles – has a mental spindle on the back which is attached to the window frame, driving the window mechanism. The spindle is always fixed in position to allow for a firm and secure fixture.
The fold-and-cut problem asks what shapes can be obtained by folding a piece of paper flat, and making a single straight complete cut. The solution, known as the fold-and-cut theorem, states that any shape with straight sides can be obtained. A practical problem is how to fold a map so that it may be manipulated with minimal effort or movements.
A nest box, also spelled nestbox, is a man-made enclosure provided for animals to nest in. Nest boxes are most frequently utilized for birds, in which case they are also called birdhouses or a birdbox/bird box, but some mammals such as bats may also use them. Placing nestboxes or roosting boxes may also be used to help maintain populations of ...
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