How to glue and frame a finished jigsaw puzzle without warping it

TUREFF• •0

Some puzzles deserve to go back in the box; others are worth keeping on the wall. Gluing and framing a jigsaw is straightforward, but a few mistakes, too much glue, a wobbly flip or the wrong frame, are what turn a proud finish into a warped, bubbly board.

Before you glue

Check for missing pieces. Gluing locks the puzzle as it is. If one is missing, decide now whether to keep searching, ask the maker about a replacement or leave the gap.
Press it flat. Run a rolling pin or flat hand gently across the surface so every piece is seated and level.
Work on a surface you can protect. Slide baking paper or wax paper underneath so glue that seeps through the joins does not stick the puzzle to your table.
Clean it. Brush off dust and crumbs; anything under the glue is there for good.

Gluing the front

Puzzle glue (sold as a clear, water-based liquid, often with a spreader) is the usual choice. Diluted white craft glue is used by some people too, though results vary.

Pour a small amount in the middle.
Spread it thinly and evenly with a plastic spreader or an old card, working it into the joins.
Do not flood it: too much liquid soaks into the cardboard and makes pieces swell and curl.
Wipe off pools and streaks before they dry.
Leave it flat to dry fully, following the drying time on the glue.

A thin coat is clear once dry. If the puzzle feels a little flexible afterwards, a second thin coat is better than one thick one.

Gluing or taping the back

Gluing the front is enough for many frames. For extra stiffness, or if the puzzle will hang without backing, you can also strengthen the back.

Adhesive puzzle sheets stick to the back and hold the pieces together.
Mounting board glued to the back makes a rigid panel.

Flipping without disaster

The flip is where finished puzzles break apart.

Wait until the front is completely dry.
Slide a large piece of card or a board under the puzzle, with another on top.
Hold both firmly together and turn the whole sandwich over in one movement.
Remove the top board; the back is now facing you.

Working on a puzzle mat or board from the start makes this much easier.

Mounting and framing

Measure the actual puzzle, not the size printed on the box. Finished sizes vary by maker, and the box figure can be rounded.
Ready-made frames are cheapest when the puzzle happens to match a standard size. If it does not, a mount (the card border inside the frame) can fill the gap and looks deliberate.
Custom framing costs more but is the simplest answer for odd sizes or large puzzles.
Glazing: glass or acrylic protects from dust. Acrylic is lighter, which matters on big puzzles; non-reflective glazing helps a glossy image.
Weight: a 2000-piece puzzle in a glazed frame is heavy. Use suitable wall fixings.

Keeping it looking good

Keep it out of strong direct sunlight, which fades print over time.
Avoid hanging it in damp rooms such as bathrooms, where cardboard can buckle.
Make sure the back is flat against the frame backing so it does not bow.

Alternatives to glue

If you want to keep the puzzle but also be able to do it again, take a photo and put it back in the box, or slide it onto a board and store it flat under a cloth. Glue is permanent; choose it only for the ones you truly want to keep. Show us the puzzle you framed, or ask about a gluing problem you ran into, in the comments.