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Passche H single action usage

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  • Member since
    June, 2018
Passche H single action usage
Posted by TankerEasy on Wednesday, June 20, 2018 7:04 AM

Up until roughly two months ago I’ve been on a very long hiatus from modeling (around 15 years).  I got the itch one day sort of at random and now a month and half later I’m currently half way through my second build.  I already had my Passche H single action from a few years back for some other projects I was doing at the time (duracoating firearms).  I'm using a gravity cup and I run the brush at around 15 to 20 psi while painting with Tamiya and Vallejo paints.  I mix a couple drops of lacquer thinner in the cup with whatever paint I'm spraying.  Now my problem is i can’t seem to get a very good spray quality, there’s time where it seems the brush is spitting the paint versus a nice even spray.  Is that because my pressure isn’t set correctly, or is that due to improper mixing?  If someone could give me a basic run down of the best way to set everything up for the best possible paint job that would be greatly appreciated as I’m a novice with airbrushing!  I hope to purchase a much nicer double action gravity feed brush within the next few months because I’d like to have more flexibility and control which the single action doesn’t really afford, so I figure in the mean time I need to learn this as best I can before stepping up to a double action.
 
This is the first build I did, a simple 1/35th Hanomag from Tamiya, the weathering ended up being a bit over the top as I got a bit carried away with it being my first build and first attempt at weathering.

 

Air Force vet (2006-2012)

PC gamer, rig specs: i7-7700K (overclocked), MSI GTX 1080 gpu, 16 gigs G.skill Trident Z ram, Phanteks case with purdy lights CoolCool

Recently completed: 1/35 Tamiya Flakvierling 38

On the bench: 1/35 Tamiya PBR "PIBBER"

 

 

 

  • Member since
    January, 2006
Posted by Paul Budzik on Saturday, June 23, 2018 9:51 AM

Right now, I think your problem is related to using lacquer thinner in the paint.  Vallejo and lacquer thinner don't work together.  Use their reducer.

As far as the Paasche H vs other designs ... you might get some insight from this video were I compare the workings of external and internal mix airbrushes ... the double action video will be added to the series shortly ...

 

Paul

 

Paul

  • Member since
    October, 2008
  • From: Fullerton, Calif.
Posted by Don Wheeler on Saturday, June 23, 2018 10:50 AM

I would just add that for me, the H atomizes better with 30 to 35psi.  Too little air flow can cause stippling.  An older version even had an adjustment on the trigger to create this effect when desired.  You can see it in this  photo from Paul's website.

Don

https://sites.google.com/site/donsairbrushtips/home

A collection of airbrush tips and reviews

Also an Amazon E-book and paperback of tips.

  • Member since
    September, 2012
Posted by GMorrison on Saturday, June 23, 2018 12:17 PM

I’ll bet the lacquer thinner/ paint mix gummed up the works.

For best results, only thin Tamiya with their thinner.

 

  • Member since
    April, 2003
  • From: USA
Posted by keavdog on Saturday, June 23, 2018 12:22 PM

I use the H most of the time with the #3 tip.  I thin tamiya paints 50/50 with 70% isopropyl alcohol and spray at 20 PSI for most applications.

Thanks,

John

  • Member since
    June, 2018
Posted by TankerEasy on Saturday, June 23, 2018 8:23 PM

My guys! thank you so much for the advice, that answers alot of my questions! 

Air Force vet (2006-2012)

PC gamer, rig specs: i7-7700K (overclocked), MSI GTX 1080 gpu, 16 gigs G.skill Trident Z ram, Phanteks case with purdy lights CoolCool

Recently completed: 1/35 Tamiya Flakvierling 38

On the bench: 1/35 Tamiya PBR "PIBBER"

 

 

 

  • Member since
    June, 2018
Posted by TankerEasy on Saturday, June 23, 2018 10:14 PM

that really helped, used isopropyl and upped the pressure to 30 psi and it sprayed sooooooo much better.  thanks guys!

Air Force vet (2006-2012)

PC gamer, rig specs: i7-7700K (overclocked), MSI GTX 1080 gpu, 16 gigs G.skill Trident Z ram, Phanteks case with purdy lights CoolCool

Recently completed: 1/35 Tamiya Flakvierling 38

On the bench: 1/35 Tamiya PBR "PIBBER"

 

 

 

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