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Plastics Technology - Texture is an area within injection molding that is often poorly understood, and rarely addressed.  In this recent article on Plastics Technology, Randy takes the issue head on, dispelling many common myths and explaining the various factors of gloss and texture.

He does a great job of explaining the concept using an analogy of the sun reflecting on water that made the whole concept very easy to understand.

He also explains the effects of different grits of blasting media on gloss levels.

You can read the full article here:

http://www.ptonline.com/columns/tooling-clearing-up-the-mysteries-of-mold-texture