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Hi all,
So I'm making a second attempt at airbrushing. I tried several years ago with compressed air cans, didn't work out so well. So I bought an air compressor with a 1/4" input/output "thingy."

I have a decent starter airbrush, but I also I have the GW spray gun.

The plan:
The good airbrush is being used with both Tamiya and Vallejo air paints and will be doing most of the work.
I wanted the GW airbrush for doing simple base coats using GW paints, so I can just pick up the paint I need at my FLGS.

Unfortunately, the GW airbrush's hose is smaller than my compressor's input - I think the hose is 1/8". What do I need to get to use my GW airbrush with my compressor?

You need an adapter for it one of the other companies adapters fit but for the life of me I cant remember who's.

Yup a 1/8 to 1/4 fitting is what your looking for. Are you planning on using the air hose that came with the new airbrush or, the one that came with the GW airbrush? Cause I'm not sure on how much pressure the GW hose can take. This also depends on what kind of compressor you have. The little hobby ones should be fine, but a shop one could give you trouble.
Try Airbrush-depot, it's where I get some of my stuff. I'm not sure if they have the fitting you need, but they might.