Whoa there nelly! I don't think I would recommend the spray glue. I own a sign shop and if this guy prited these on self adhesive then spray glue is just gonna gum up your installation (pun intended). If your surface is fairly smooth (no major irregularities or bumps) and the paint is gloss or semi then no extra adhesive is required nor recommended.
The easiest way to install them is by what I call a center hinge methos. With a couple of pieces of tape in the corners get the graphic in the place where you want it. After your satisfied run a piece of masking tape perpindicular to the graphi so that you have about 2 inces of tape stuck to the cab on each end. Run this tape across the middle of the graphic. Now pull the graphic off the backing paper up to the tape and cut the backing paper (important do not cut the graphic) as close to the tape as possible. Squeegy the graphic down from the center out moving up the graphic with overlapping strokes and pretty good pressure. Now remove the tape across the middle pull the rest of the backing paper off and do the center out thing on the last half.
Works like a charm.
By the way I have a large format inkjet. Very high quality 1440x1440. I have been toying with the idea of offering sideart, cpo's, and marquees. I would use a couple of my own designs and would also offer customer provided artwork option. What do you guys think the demand for that type of service would be?
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