The photo collage on dibond is the ultimate in picture presentation today; it is almost unanimously in exhibitions. But as soon as the dimensions of the photo are important (the bedspread A3 for example) successful bonding is very delicate (appearance of bubbles, etc.). After trying various methods with little success I discovered this 3M product that achieves a perfect result easily; just be very careful to avoid touching the adhesive with your fingers and avoid any dust between the adhesive and the photo. What makes this product easy to use is that it is repositionable until we have lobbied hard with the small scraper provided with the roller. We can fumble for exact positioning of the picture and very easily we hunt the air bubbles passing the spatula lightly at first, before pressing firmly. The product comes with a very clear manual in several languages (including French). This product is curiously not available in France, but the book Amazon UK so without delay or customs fees problem (ordered on Friday I received on Monday; free shipping).