Pennello o spugna

Many puzzles, once finished, are true works of art.After you finish one, you may want to keep it to show off to friends or appreciate what you've achieved.You can store the puzzles by applying clear glue to the front, to keep all the pieces together;furthermore, you can stabilize it even better by repeating the operation on the rear side.Once glued, you can attach it to a sturdy surface, so that all the pieces do not fall apart.