Here is a product I found that I did a quick test of . . . the Copic Airbrush System. It works with the Copic markers to make it easy to change colors . . . just insert a different color Copic marker into the airbrush and you are ready to go. No need to clean anything out to make sure your colors don't bleed together.
Here is a video showing the product in action.
Here are some links to Copic. Tell them Beth sent you!
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