Here's a test putting decals on a wrinkle finish. These are ALPS printed decals.
The first photo shows the decals as initially applied. The A and G aren't really that bad and set fairly well on their own. The INCREASE decal was placed over a very rough spot. It was cut rectangular, you can see the edge just inside the green line. 
The next A photo is a closeup showing how well it settled into the wrinkle using a 'setting solution'. The blackening around the area is because the solution still wasn't 100% dry when I took the photo.
The last photo shows INCREASE after application of the setting solution. It formed itself perfectly to that extremely rough wrinkle area below the word and the edge is no longer visible.
Now...about the setting solution. Its readily available at hobby shops, there's a number of different brands. Any place that sells the line of Testors model paints, for instance, should have it. Its also available on-line at hobby shops and ebay.
Well, I didn't have any available so I tried "acrylic reducer", the same as I use for retarder in my lacquer mix. Lacquer thinner alone is too active, this reducer is a tad on the active side...maybe the real thing is more manageable. LIGHTLY dab on the setting solution...ONLY ONCE...don't brush across it because the lettering will go bye-bye. You may see the ink crinkle up a bit when wet but it settles back down as it dries. I don't know how laser ink will behave, I imagine much the same way.
Another problem worth noting is the difficulty to slide the wet decal into place on the wrinkled finish. I damaged the INCREASE decal a couple of times trying to get it situated and it is 'patched' together. No problem with the A and G.
-Bill
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The Sparkbench
