I have low tack sign mask. But most people use friskit paper. You can use shelf paper if that all you can get. Cut your stencils and stick it down.

The real pros simply design what they want on their computer and take it to a sign shop and have a vinyl stencil cut.  As said, I don't do it that way.  If you don't want real sharp edges, you can just cut a stencil out of paper and lay it down and spray.  I did the bottom of a Twister wing  with a bunch of randomly placed different color stars.  Looked pretty good at a distance.

I just got back from the sign shop. I took a set of Satona plans so he could get the dimensions right. I am having him cut STUNT HANGAR .COM that will fill the entire underside of the wing. Some numbers and AMA and FAI and son other things. I will pick them up at 3:00. I can hardly wait! It will cost about 30-40.00 to have him do it on my material but to me its worth it. I will post them tonight when I start painting.

I am also going to try a panel line pen from Top Flight on the model. Just to see if I can rid myself of using the Rapidograph pens

Sparky, thats gonna look awesome overhead with Stunt Hangar on the lower surface.   

Greg

Am lucky enough to have my own vinyl cutter, will only cut 6 inch tall letters max but works well. Went through all the sign vinyl and frisket I could stand then finally settled on white Contact shelf paper. Frisket was too sticky, so tried low tack frisket, worked OK but being clear it was difficult for these old eyes to see the stuff when I was trying to position small graphics. Sigh vinyl works OK and isn't clear but like frisket it's a whole lot more expensive than shelf paper.

I haven't found a down side to shelf paper, it's inexpensive, haven't had any trouble with paint bleeding under the edges and it is easy to remove. I use hardware store low tack masking tape for a backing to hold everything in place when applying the stencil to the airplane making for a cheap system that works. All the Graphics on the two SHIMS pictured in the Brodak .25 thread below were done with shelf paper.