I LOVE this I think it's like gluing the back of a puzzle but it makes it very easy and a lot cleaner than using Adhesive. I haven't put together a super large 1000 piece jigsaw puzzle or anything like that, but that probably depends on the manufacturer and size chosen etc. My 500 piece jigsaw puzzles come in different sizes, some relatively small, others are HUGE and take up 3 of my small 500 piece jigsaw puzzles. The main thing it advertises is that it makes saving your puzzle easier and it does it 100%. My only complaint would be that this holds the puzzle together nicely, like on a ribbon, but it doesn't keep the puzzle "straight". The puzzle is quite flexible and you will need to frame it to keep it perfectly straight. If it had a thicker cardboard backing or something like that it would make it even better. However, it did what I wanted it to do, great, and I would highly recommend it to everyone else! Thanks for a great product :) PS for all the puzzle lovers out there who might want a budget version, there really isn't much advantage over duct tape. I plan to use them anyway as I've bought quite a few but for everyone else. Just know that this is an option that does the same thing.
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