Tuesday, July 17, 2012

All the Colors of the Rainbow


Pigments and Dyes

In coloring wood there are two striking differences.  Above is the turquoise dyed pen. 

PIGMENTS are large flat particles.  They lay together on the surface of wood (or the wall) and completely cover whatever is underneath them.  The best way to think about pigments is that they are scales on a fish or shingles on the roof.  They cover.  Paint uses pigments to re-color something.  If the original "bleeds through" or the new color streaks this is considered poor quality.

DYES are much different than pigments.  They are most often used in Stains to color without losing the variations in grain.  Dyes are teeny tiny, itsy, bitsy and  are translucent.  You can see the grain and other differences in the wood and still have the color.

The RED block underneath the pen is an example of a dye applied to the surface.  We can also use a DYE based in alcohol to permeate the wood under intense pressure.  That looks very similar but we can turn the piece of wood that has been dyed and the color goes all the way through.

Exempalary pictures in tomorrow as they are on a different computer.

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