Sagyma SW770 double action professional airbrush
Gravity feed double action airbrush with built in pressure regulator
(0.25 mm fluid nozzle)
||- approx. 90 USD
Acrylic case containing one airbrush, hose adapter, nozzle wrench
and a one page instruction panflet
Good overall quality construction
- Built in pressure regulator
- 0.25 mm nozzle
Key parts made of soft brass.
- Unnecessarily large fluid reservoir for detail painting
- No extra needle included
- Visible wear of parts after one year of use
If you ever wondered about an Iwata-like airbrush, costing
one third of its price, I think I've just found it. This is a new
airbrush called Sagyma model SW770. Yep, you guessed... made in China.
However, this is a fairly good product. In fact, except for the
lateral opening in the main body and a smaller nozzle, it seems a copy
of the Iwata HP-C Plus.
The product comes in a nice acrylic case with contents
protected by high impact foam. It comes with a complete airbrush, a
screwless hose adapter and a nozzle wrench. The quality of the tooling
is very high, and unless you look very closely, you will believe it is
main body of the airbrush is made of chrome plated parts, with the aft
Aluminum, ensuring it completely safe to spray lacquer thinners. The
air valve screw is the same of Tamiya Spray-Work series, so if you have
a Badger hose, you'll need the Tamiya adapter (item #93010).
The other option is to use the adapter that comes in the set for
friction fitted hoses. The needle has a high pitch adjusting screw at
the end of the handle, which is a welcome help to spray constant width
lines. Of course you can leave it open to allow full amplitude trigger
stroke, or take it off the airbrush to remove the needle without the
need to unscrew the aft handle.
After the dealer, the nozzle/air cap system should be self-centering (it is not!). Like the Iwatas, the nozzle cap has only a protective function, avoiding a complete exposure of the needle. And since the nozzle is 0.25 mm, the needle is very fragile at its end. Too bad an extra needle is not provided. A common feature of high performance airbrushes is their ability to spray without the needle cap attached, something a Testors or a Badger airbrush cannot do (except for the Sotar 20/20). This feature is particularly important to spray very fine lines, since the needle cap always produce some turbulence when the atomized paint leaves the nozzle.
Removal of the air cap reveals the fluid nozzle, which is
sealed by an o-ring. I don't like this type of seal, but the
manufacturer assured me it is thinner resistent. They also advised me
that it's not necessary to remove the nozzle after each painting
section. Since it is a very delicate part, you should remove it only in
case of clogged nozzle, or occasionally for a complete clean-up.
I played a bit with this airbrush for this review. Having
tried a Iwata a few times before, I can tell you the SW770 perform
pretty much like that, except for an annoying click when the air valve is
triggered. It weights about the same of a Badger 100, and the needle
action is very smooth. I made some tests using water soluble inks (my
standard test for airbrushes) to see how it works when pushed.
On my very first trial, I found this tool produce an excellent atomization pattern for a wide range of pressures. I started with 8 psi and increased the pressure up to 25 psi, and the gun performed very well in all tests. I was able to paint very fine lines by removing the needle cap, and almost touching the surface with the needle (watch out, don't bend it!). More than the spray patterns obtained (agreed, they could be done with a number of other brands), what impressed me the most was the easiness with that I sprayed fine lines and mottlings. Honestly, way easier than with my trusty Badger workhorse.
(ed: text amended after one year using this gun)