ACRYLIC LACQUER -
ADVANTAGES
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Easier to work with.
Lacquers offer simple formulas in a single stage format which
require less work for the painter to mix, maintain, and apply with
consistency. This simplicity also makes custom paint work
applications easier to perform.
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Quicker drying time.
This helps eliminate the problem of runs or sags developing while
applying coats and lessens the chance that an airborne contaminant
will attract and attach to the surface. If these problems do occur
it isn't necessary to wait long before wiping or sanding
imperfections away.
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More economical.
Lacquer materials are less expensive on a one to one basis
compared to automotive acrylic enamels.
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Availability of
factory original colors. Most all original paint colors applied to
cars before acrylic enamels were standardized are not currently
available in anything except lacquer formulas. |
ACRYLIC LACQUER -
DISADVANTAGES
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Environmentally
unfriendly. Up to 85% of a lacquer paint's chemical makeup may be
released into the atmosphere through evaporation while spraying
and drying.
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Lacquer dulls while
drying. Buffing and polishing are required to bring out the gloss
qualities of lacquer unless a clearcoat is specifically used.
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Susceptible to
damage from environmental conditions. This refers to weathering
and exposure to sunlight that can affect the appearance of a paint
finish. For the typical display model, these conditions are not
applicable. |
SOLVENT &
WATER BASE HOBBY ENAMELS
Solvent base hobby
enamels are formulated specifically for use with plastic. The
formulations do not contain hot solvents that might otherwise be
incompatible with plastics and other modeling materials and are also
not as toxic or flammable as acrylic lacquer. These paints are good
overall and are readily available. When compared to acrylic lacquer in
applying a gloss finish, however, solvent hobby enamels fail to
measure up in the following major areas:
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Longer drying time.
This can prove to be most noticeable and frustrating if you have
problems with airborne contaminants being attracted to the surface
you are spraying. The fact that the paint takes longer to dry
increases your chances of contaminants getting onto the paint.
It's also a longer wait if you wish to sand away surface
imperfections before proceeding with further coats. Even if you
apply a perfect finish with absolutely no orange peel you may have
to wait up to a week before you can handle the material and
proceed with assembling your model, and perhaps up to two weeks if
you plan on rubbing out the finish with a polishing kit. |
Lacquer's inherent
rapid evaporation lessens the chance of airborne contaminants marring
your surface while you are painting. If imperfections do occur they
can be removed almost immediately from light coats of lacquer. For
heavier coats it only takes about 15 - 20 minutes drying time before
you can safely sand away imperfections and proceed with further coats.
A similar dilemma with an enamel finish can have you waiting overnight
or longer before you could attempt to sand the surface.
Consider just how many
coats you usually apply to a finish under these circumstances. If you
find yourself often having to remove surface imperfections or trying
to avoid removing them by covering them up with more coats of paint
you are probably spending a lot of time painting, or you are painting
with less success than you are hoping to achieve. It would not be out
of context to say that a successful painting and polishing process of
an enamel finish on a car body can take up to a month or more. 6 - 8
coats of lacquer followed by 6 - 8 coats of clear can be applied in 2
days and handled the next day afterward. About 5 - 7 days later it can
be rubbed out with a polishing kit. The time saving advantage of
lacquer is dramatically apparent.
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Poorer gloss
quality. Personally, I have viewed many, many contest quality
models that have been meticulously rubbed out with all orange peel
removed and have been polished to a spectacular shine. Regardless
of how well built the model is or how reputable the builder, I
have never
seen an enamel finish
with a level of gloss quality comparable to a similarly treated
lacquer finish - bar none. Photos in magazines may look
convincing, but viewed side by side in person the differences in
quality are clearly visible. Devotees of hobby enamels may
disagree when they read this, especially if they've never worked
with lacquer. I attend modeling events nationwide and welcome anyone
who meets me to prove
me wrong. |
Wait! Don't change the
channel! I do not at all intend for that statement to sound lofty.
It's not a modeler's skill I'm referring to but rather the chemistry
of the materials themselves. Simply stated, the resins and polymers in
lacquer hold the edge over enamel by providing better gloss through
its chemical component design. Any modeler could apply his skills
equally to an enamel or lacquer finish and should readily be able to
see the difference. Those modelers who are able to attain a level of
quality with an enamel finish approaching that of lacquer would likely
have spent a substantially greater amount of time and effort to do so,
although in my experience I have yet to see any enamel finish surpass
the quality of lacquer.
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Less durable. This
is closely related to the reasons discussing enamel's poorer gloss
quality. A harder, more durable surface allows polishing
materials, whether they're sanding cloths or liquid polishes, to
better and more evenly smooth the surface of a finish. Again, the
very chemical advantages of lacquer's resins and polymers are
what's responsible. This is also a factor to consider over the
course of time. Repeated cleaning of dirt and dust and polishing
can wear down and diminish the qualities of an enamel finish far
quicker than a lacquer finish. |
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More expensive. The
differences here are dramatic and apply across the board. Compared
side by side on average, mainstream hobby enamel paints are
currently retail priced about three
to five
times higher than their premium quality lacquer counterparts.
Enamel thinners as much as six
to eight
times higher
than lacquer thinners. Some of this has to do with the cost of
packaging, but not nearly enough to be responsible for these wide
gaps in pricing. |
HOBBY LACQUERS
The term
"lacquer" applied to the label of a hobby paint product
rarely, if ever, refers to the contents being a true lacquer formula.
These are typically enamels that have instead been modified by being
formulated with a different, sometimes harsher solvent base, quite
often toluene or a toluene variant. For purposes of this tutorial,
hobby lacquers can be included in the above comparisons since their
properties are essentially the same as those of any conventional
solvent based hobby enamel.
SUMMARY
Hopefully it's
apparent: lacquer = better, faster performance for less cost and
effort. This is not to say that hobby enamels do not have their uses.
They do
provide decent results. I use them often myself and recommend them for
brush and detail painting as well as airbrushing flat, semi-gloss, and
metal appearance finishes. But when it comes to applying the ultimate
gloss finish, lacquer has no peer.
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