Only informed, then stick

Had I first read the reviews here, I could have saved myself the double work.
Unfortunately, I had, like other buyers also notice that in this puzzle glue definitely the motto "more is better". Even with my 2000 piece puzzle has not held on the first attempt and a second layer of glue was needed - this time an extra thick. But then stuck together all parts of the puzzle, and I could easily hang on the wall.
It is therefore important to bring as much glue on the puzzle (by squeezing the bottle and pump with a sponge) and this then well distributed, so that it can run in the interstices of the individual parts (pad not forget!). Do not worry, the first milky white layer becomes transparent after drying.
Conclusion: When used correctly, a good product.