Tortoiseshelling
This finish was inspired by the far east and
their use of the tortoise shell effect in furniture veneers.
Today, acquiring genuine tortoise shell is illegal, and as a result, artists
have sought to recreate the look using paints. This finish is particularly
suited to smaller objects. While painting, remember that real tortoise
shells come in an infinite variety of colors and designs. Almost any
combination of raw sienna, burnt sienna, burnt umber, crimson and black can
be used.
It is best to experiment on a prepared surface
with different color combinations, for example, paint a large area of raw
sienna with small areas of black and burnt umber.
Traditionally, this effect was created then
softened with a badger hair brush. These brushes, however, are
environmentally unfriendly and expensive. An alternative to the badger brush
is a good quality soft dusting brush, as pictured below. Delicate handling
of this type of brush enables the artist to delicately soften the painted
effect.
Before you start, ensure that the working
surface is as smooth as possible. Prepare the surface with a coat of golden
yellow oil based eggshell. Protect the finished effect with at least 2 coats
of satin or high gloss, oil based varnish.
Tortoiseshelling:
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Paint a clear glaze over the the primed and
base coated surface. Then, using a small brush and an artist's oil based raw
sienna, paint diagonal brush strokes as illustrated. |
Using the same brush, repeat the previous
steps using burnt sienna, covering more of the blank surface areas. |
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Again, repeat the process using burnt umber,
filling in even more of the blank areas. |
Soften the effect with a wide, soft bristle
brush. |
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Depending on the look you want to achieve, you
can use either a crumpled newspaper page or, for a softer look, a crumpled
rag. This will further soften the finish. |
Then, once again, soften the effect further
with the same soft bristled brush. |
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One of the last steps is to flick droplets of
paint on the finish by using a old toothbrush with the tip having been
dipped in black oil paint that is thinned slightly. This will add depth to
the overall consistency of the final finish. |
Enhance the final effect by painting in small
areas of black using a small brush. Work with care and be sure to use a
SMALL amount of paint on your brush. |
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To summarize:
Tortoiseshelling
is a paint effect that works best on smaller objects, due to the detail
involved. Here we have a old mirror that was on it's way to the trash heap
or the basement, and have transformed it into a gorgeous bathroom mirror
above the sink. Good enough to fool even the most experienced antique
appraisers on first glance, this finish always looks expensive and luxurious
when applied properly. Have fun with it!
Related Articles:
Surface Preparation
Paints and
glazes
Materials and tools
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