ORIGINAL: Bax
This method works because the adhesive used on MonoKote will eventually stick without heat. If you've ever had old scraps you saved where you rolled them up without the backing, you'll find them well-adhered to each other. The trick is that the material must be in good contact with the surface below. You don't need to use Windex (tm) or any other special product. Soapy water works just as well.
You float the trim piece into position using the liquid and then squeegee out all of the moisture. The MonoKote will stay on because there's now no air between the pieces. Eventually, the residual moisture will come out and the adhesive will begin to work. If you use heat, be very careful, because the material will shrink, and you may get a ruined job. Also, any moisture left will turn to steam and make bubbles in the trim. Using a small amount of trim solvent after about a week or two will seal the edges and give you a very long-lasting trim job.
I think you are right, I have seen pieces of monocote adhere themselves to other piece. I will try this. But what I have in mind is placing thee model in the sun for a couple of hours, that will do the trick w/o using the iron...
Gerry