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Virtual Dictionary

Negative extrusion

Extrusion in modelling is the act of taking a 2D plane, forming a shape on that plane, and then pushing out a solid object in that shape as a cylinder from that plane.

Negative extrusion removes any solid material already existing, in the space it extrudes across in the form of the negative cylinder created. It can be straight out from the plane, or at an angle. However, it is always in a straight line, and always the exact cross section of the shape on the 2D plane.

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Related Dictionary Entries for Negative extrusion:

Cutter Path


Negative extrusion



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Connecting Twitter to a Light Display
An augmented reality exercise for the London Olympics - connect the lights of the London Eye up to twitter, and scan all the feeds simultaneously for mentions of them. Positive toned comments light bulbs. Negative toned comments turn bulbs off.


Industry News containing the Term Negative extrusion:

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Psychologists Mante S. Nieuwland and Gina R. Kuperberg from Tufts University investigated how different types of negative statements are processed in the brain. In this study, the researchers measured event related potential responses (ERPs...

Bad reviews affect the stock price of the companies making those products, causing negative returns of as much as 8 percent, which could accumulate and spiral if the negative reviews aren't addressed, said Gerard J. Tellis, the Jerry and N...

When something we do produces a positive result, we actually perceive it differently than we would if that same action yielded a negative result. In particular, people feel a greater connection between voluntary actions and their outcomes i...

A group of scientists led by researchers from the California Institute of Technology (Caltech) has engineered a type of artificial optical material -- a metamaterial -- with a particular three-dimensional structure such that light exhibits ...

Octopods, which are also known as octopuses or squid, are considered to be the most intelligent invertebrates. In fact, they have been referred to as the “sages of the sea”. They are capable of learning; they can open tin cans, and can even...