Air brushing

[bikermutt07]

@fredk you going off to war? Your avatar is different.

[fredk]

I've had that for months now. I use the same one on all the forums I'm on

[alpha2]

NEVER underestimate a minion with a full-body helmet!

[ScoobyNewbie]

Thanks.

[VabaX]

On 9/21/2018 at 4:47 PM, robs456 said:

 

As you may know, the very nature of how an airbrush works make it so the dye will never penetrate as well as other forms of application, the best being dip dye of course.
Because the airbrush will vaporize the dye, the tiny tiny drops that make it to the leather will not be able to penetrate, and some may even hit the surface dry and get 'smashed' into the leather due to the air pressure. 

  

sorry, but from a chemistry/physics perspective, that is not at all how dye absorption works. It has nothing to do with the dye being applied by force. no matter what method you use, It is absorbed through the leather the same way that a sponge absorbs water; going from a wet/concentrated medium into an unconcentrated/dry medium ala ozmosis effect. ie, it gets sucked in to the material

 

the ONLY reason why airbrushing doesnt usually penetrate as deeply as wool dauber application is because you're applying far less of it. I will bet you my life savings that if you measure out identical volumes of dye and apply them to fixed/measured out areas of leather, one sprayed on in very heavy volume, and one applied by sponge/dauber, it will have exactly the same penetration.

 

The solution to more penetration is to open up that airbrush nozzle and let the leather drink up as much dye as it can. still better than dipping because its still more efficient in terms of dye use, far less messy, lower spill risk, easier to do several colours of dying in one batch, etc

[robs456]

6 hours ago, VabaX said:

sorry, but from a chemistry/physics perspective, that is not at all how dye absorption works. It has nothing to do with the dye being applied by force. no matter what method you use, It is absorbed through the leather the same way that a sponge absorbs water; going from a wet/concentrated medium into an unconcentrated/dry medium ala ozmosis effect. ie, it gets sucked in to the material

 

the ONLY reason why airbrushing doesnt usually penetrate as deeply as wool dauber application is because you're applying far less of it. I will bet you my life savings that if you measure out identical volumes of dye and apply them to fixed/measured out areas of leather, one sprayed on in very heavy volume, and one applied by sponge/dauber, it will have exactly the same penetration.

 

The solution to more penetration is to open up that airbrush nozzle and let the leather drink up as much dye as it can. still better than dipping because its still more efficient in terms of dye use, far less messy, lower spill risk, easier to do several colours of dying in one batch, etc

Sorry, but from a practical standpoint that's exactly what I said. You don't get an argument from me.

[toe2short]

On 9/21/2018 at 8:21 AM, ScoobyNewbie said:

I’ve been told to “open the pores” of the leather before dying. I’m confused on what this actually means.

Do I water soak it, use just a little water, like when I’m stamping, or do I use oil? I’ve been told quite a few ways. It seems to change not only person to person, but project to project. 

I had a project that I oiled one part after dying, and other parts before dying and I got what I feel is wildly different effects. 

Can you explain what is meant by “open the pores”?

Try to use a dye prep before you air brush it , give it two coats after the first one is completely dry. The color will be darker when using the dye prep. It obsorbes the dye better.