GOLDEN Airbrush Transparent Extender
is a 100% acrylic binder system that is designed to modify GOLDEN
Airbrush Colors for increased transparency and film hardness.
Engineered to meet the highest standards of professional airbrush
illustrators, Airbrush Transparent Extender possesses excellent
spraying properties and is formulated to minimize tip build-up,
clogging and surface defects.
Extender can be blended with GOLDEN Opaque or Transparent Airbrush
Colors in any ratio desired, allowing artists to precisely control
of the transparency of the colors. These attributes are very important
for techniques such as shading and smooth gradations.
Airbrush Transparent Extender can also be used with any of the
GOLDEN Heavy Body, Fluid, High Load, and Iridescent & Interference
Acrylics. When the mixture of Paint and Airbrush Medium exceeds
a ratio of 1:2 or more, the Extender can be added to further thin
and extend. This will keep the retarder level balanced for a quicker
drying film, without sacrificing sprayability. GOLDEN Airbrush
Medium is useful to make products spray better, but it can quickly
over-compensate the amount of needed retarding agents. Such an
overload will hurt the drying and increase the likelihood of Frisket1
pull-up (see below).
Stir gently to ensure
homogeneity before blending with GOLDEN Airbrush Colors. Also
mix Airbrush Colors according to label directions before blending
with Extender. Any ratio of Airbrush Transparent Extender to Airbrush
Color can be used. Generally, a ratio of 5 to 10 parts Transparent
Extender to 1 part (by volume) Color is a useful starting point
to yield adequate transparency. Careful blending is required to
minimize foam generation, as excessive shaking or stirring readily
entraps air bubbles which may result in surface defects.
Water can also be used with Transparent
Extender and the Airbrush Colors, but doing so will reduce the
sprayability and frisket performance that the Transparent Extender
enhances. When using water with the Transparent Extender, a 1:2
ratio of water to Transparent Extender is the maximum amount of
Spraying Iridescent and Interference
GOLDEN offers metallic
paints in two viscosities, and both can be reduced with Airbrush
Transparent Extender for spray-applications. Generally, the Airbrush
Medium is recommended for reducing Fluid Acrylics, however, testing
has shown the reflectance to be higher when Airbrush Transparent
Extender is used instead. The lower level of retarders in the
Extender will allow for faster drying times when spraying larger
areas with an even film.
When frisketing is of
critical importance, GOLDEN Airbrush Transparent Extender should
be used to extend the Airbrush Colors. This combination dries
more quickly, friskets extremely well, and has excellent spray
performance. GOLDEN Airbrush Medium also functions as an extender
for Airbrush Colors for applications requiring greater transparency
and greater open time (slower drying). Because of the slower drying,
using the Airbrush Medium with the Airbrush Colors may result
in poor frisket performance (color pulling up with the frisket
or mask), unless the film is completely allowed to dry.
When frisketing or working
with loose masks, allow adequate time for the paint film to dry
and refrain from using excessive force during frisket application.
Generally, a 10-minute drying time is recommended; however, this
time can change dramatically in relation to climatic conditions.
High humidity (greater than 80% RH) and/or low temperatures (less
than 60oF) will slow the drying process. Low humidity (less than
40% RH) and/or high temperatures (greater than 80oF) will speed
the drying process.
Use of a hair dryer or heat lamp
can be used to shorten drying times, but exercise caution as excessive
heat can warp the illustration board, and/or create air bubbles
under any frisket in place, or interfere with film formation and
yield a fragile film.
Paint on any non-oily
surface. Non-absorbent surfaces should be abraded for increased
adhesion. Clean tools with soap and water. Keep tools wet during
use. Do not allow product to dry in airbrush. Clean airbrush with
water, ammonia/water, alcohol or miscellaneous household cleaners
(however, consider effect of cleaner on airbrush parts, such as
rings and seals).
- Airbrush Medium Information
- Beginning Airbrush Tips: Volumes
I & II*
- Technical Notes on Drying