[WWI] Iwata HP-CH question

Chris Savaglio csavaglio at hotmail.com
Tue Jul 26 23:41:50 EDT 2005

I use an Iwata HP-C plus.  It's pretty much the same, but doesn't have the 
adjustable air.  I think the air wouldn't be too helpful, since most likely 
you can adjust the pressure at the compressor.  I love it, and went from a 
nice Gunze brush, which is just a rebadged version of the Iwata brushes.

Some advice:

Don't get any smaller than a .3mm nozzle size.  Any smaller and the paint 
dries and clogs the tip up too fast.  The -C series are .3mm, with the A and 
B's .2mm.  My old Gunze was a .2mm.  You can swap out needles and nozzles 
later, for about 45 bucks total if you decide you need smaller.

With properly thinned acrylics, I can get a near pencil line pattern.  
Pretty amazing.  Even 72nd scale soft edged camo's are no problem, as well 
as pre-shading, post shading, etc.

Get a tube of airbrush lube.  It's like a semi thick lube you can put on the 
moving parts of the airbrush.  Put a drop on your finger and run the need 
through it before you re-install it.  It'll keep the paint from drying on 
the tip, especially if you spray acrylics.

Keep the brush imaculately clean.  A lot of q-tips and a set of the airbrush 
specific, non-disposable pipe cleaners are a must.  The cleaner you keep the 
brush, the better it'll spray.  I usually do a full break down on the 
airbrush before starting a model, or at least before starting the final 
finish.  It doesn't take long once you know how to do it, maybe 10 or 15 
minutes.  I use laquer thinner since it takes off everything.  Really, its a 
good idea for every airbrush.

The difference between the plus and non plus brushes is the thread pitch on 
the tips and nozzles.  The plus's had a courser thread to make it more 
durable.  My old brush was the old pitch and I never had a problem breaking 
off tips.  It looks like Iwata is going toward everything being on the new 
threads, so parts may be a problem in a few years with the old stuff.

The weight of a metal brush may get tiring, but I like the balance.  I tried 
an Aztec, and aside from other issues with it, it had no weight and I had a 
hard time with it.  Besides, it's not like we have the airbrush out for more 
than a few minutes at a time anyhow.

Hope this helps.


>From: ot811 <ot811 at msbx.net>
>Reply-To: World War I Modeling Mailing List <wwi at wwi-models.org>
>To: <wwi at wwi-models.org>
>Subject: [WWI] Iwata HP-CH question
>Date: Tue, 26 Jul 2005 23:28:17 -0400
>Do list folks have any experience with the Iwata Hi-Line HP-CH airbrush ?  
>It is a bit pricey but seems to certain features that I find very 
>attractive, namely:
>    - a top feed cup
>    - dual-action that can be converted to single-action by adjusting a 
>pre-set knob
>I saw this brush at the Nats, and it seems to have a good balance and heft, 
>(same as with the Eclipse that Greg let me use)
>Are there any disadvantages of which I should be aware
>Is the brush easy to clean, eg, in comparison to a Passche H
>The brush has a fine air-regulator adjustment knob  - any opinion about how 
>useful this is to us modellers ?
>Any feedback will be highly appreciated
>thanks in advance

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