Carefully lift one corner of your puzzle and slide the paper under it. Continue to move the puzzle over the paper until the puzzle sits completely on wax paper. Depending on the size of your puzzle, you may need to use multiple sheets of wax paper. If you do, overlap them under your puzzle so no glue can leak through. [2] X Research source

Allow the water and alcohol a few minutes to fully evaporate.

Continue pouring and spreading until all pieces have glue between them. Don’t leave excess glue unspread on the surface of pieces. [6] X Research source Coat the edges of the puzzle as well. [7] X Research source It is okay if some glue goes onto the wax paper, but a large amount in this area may make the puzzle stick to the wax paper, so quickly wipe it away with a wet paper towel, doing your best to avoid touching the rest of the puzzle. [8] X Research source

Puzzle glues typically apply a finish to the puzzle, which is one reason why some puzzlers prefer alternative methods. It can also be messy and damage the puzzle if not applied carefully. [11] X Research source

You can use clips to keep the sheets together tightly or ask for help holding it, which is an especially good idea with larger puzzles![12] X Research source

Use a tape measure to determine the length and width of the puzzle, and then use the tape measure to mark those dimensions on the backing. [17] X Research source Place the glued puzzle on the backing board and draw an outline around it. Remove the puzzle and use the drawn lines to guide your cuts. [18] X Research source

You can also use a puzzle glue if you prefer, spreading it across the entire surface. If you do use a spray adhesive, cover your work surface well beyond the edges of the board or puzzle. [22] X Research source