I made a few fake books for a retirement cake. I cut and sized the gumpaste first, so that I could measure and make sure that each book jacket would fit.
I'm picking up the sugar sheet today and wasn't sure the best way to do it?
Piping gel?
Vodka?

I don't want to roll out new gumpaste because I need it for thursday and because these are exact sizes already.

Thanks!

I would wet the dried gumpaste ever so slightly with vodka to attach them. Make sure not to add too much, or it will melt the paper and your ink will run.

Thanks! I'll try that. I put two images of each on my page so that I would have a spare. Yikes. Little scared

Make sure you double check your sizes because gumpaste shrinks as it dries.

Ideally, you should apply the sugar sheet to the gumpaste while it's still soft, but that ship has sailed. I agree with mom2twogrlz's advice.

If it doesn't stick properly, you may want to roll out another sheet of gumpaste - ever so thin - apply the sugar sheet to that, then attach the fresh gp sheet to the dried jacket.

Thanks. I was thinking I might have to suck it up and do it again. I knew the gumpaste would shrink a little so I took that into account, but what happens when the sugar sheet is already on it and it shrinks?

I've never had a problem with the sugar sheet getting weird when the gumpaste shrinks. I usually sandwich my sheet of gumpaste between two pieces of foam sponge to prevent it from curling while it's drying. I also like using fondant with tylose, which seems to be a bit more forgiving than gp.

I attached an image to a dried gumpaste wine bottle and I actually had a mix of vodka and corn syrup handy so I just painted a very light layer of that onto the bottle and it attached image. It worked great. It was thick enough it didn't bleed or dry out too quick. If the straight vodka doesn't work try 50/50 vodka/corn syrup.