I'm inexperienced with using my airbrush and I've never used a stencil with it.
I'm making a bandanna from 50/50 mix of gumpaste and fondant. I want to decorate the bandanna and I think the easiest way to do that fairly quickly is with a stencil and an airbrush. The bandanna is not on the cake yet (and won't be until Friday). It's sealed up in baggie laying flat on my table.
My question (at long last) is this:
I believe I'll have to let the airbrush paint dry before sealing up the bandanna again. Do you think the bandanna will stay flexible enough to drape it on the side of a cake? If it helps, it's 83 degreesF, storms are in the state, it rained yesterday, it's humid, and I don't have central air (but do have window air). I can move the bandanna to a room without a window ac in it so it's warmer and moister, if needed.
I've been too chicken to ever get my airbrush out to use, but I've stenciled with those Wilton aerosol sprays (Color Mist, or whatever they're called) and they dry in less than half an hour. If airbrush paint is similar, you'd probably be okay leaving the fondant out in the warmest room in your house (no fans, they dry things out too much) for an hour or so. What an interesting problem, though. I've always stenciled on a flat surface, so this has never come up. Would you have time to roll out a little piece of fondant, paint it and let it dry to see what happens? This may not be a possibility, but I'm embarking on a period where I'm trying a whole bunch of new techniques, so my motto lately is "experiment, experiment, experiment"!
I made the design on the bandanna out of fondant, placed it on there, and sealed the whole shebang in a Ziploc. The bandanna stayed flexible enough to put on the cake, but the design did not. At the top edge of the cake, the design was too hardened to bend over the edge, even after painting a bit of water on it. Of course, no one noticed. It's always the things I worry about that no one else notices.
I did airbrush gumpaste roses for another cake last weekend. The airbrush color took about an hour to dry so I think that would have been too long to expose the bandanna to air and keep it flexible enough to drape on a cake.
Thanks for your input!