The World's Largest Jigsaw Puzzle
Largest Puzzle - Keith Haring - Double Retrospect - 32000 Pieces - THE WORLD'S LARGEST JIGSAW PUZZLE by Ravensburger
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Keith Haring: Double Retrospect - 32000

Glueing & Mounting  (by David Genys)

Hello. Now that I've completed Keith Haring's "Double Retrospect" by Ravensburger, I would like to share the technique I used for "glueing" and mounting this puzzle. The puzzle comes in 8 bags, effectively, 8 X 4,000 puzzles.

Step 1:
I used double sided tape (1" wide) to cover the first two rows of pieces along the outside edges - this helps to fortify the edges. Then, I used the tape along the seams (as if glueing 1,000 piece puzzles) and then four more strips roughly 1/3 of each 1,000 piece section.
Then I took contact paper (self-adhesive shelf liner) and cut that into strips of 3.5" x 18" and set them along the edges.
Step 3:
Using a floor roller (for linoleum tiles), the double-sided tape and the contact strips were pressed together and glued the outer edges of the 4,000 piece section. This helps to prevent shifting and buldging of the inner pieces.
Step 4:
I then used longer full sized sheets to cover the remaining areas of the puzzle section.
Step 5:
The floor roller was used again to firmly press the contact papaer against the blue backing of the puzzle. By this point, and carefully, you are now able to lift the 4,000 piece section.

Mounting to display board (40" X 60" X 5/8" triple corrugated display board) I am using double-sided, removable foam square tapes, 1" X 1" and 1/32" thick to display the puzzle. The foam squares are peeled off a roll and then placed in the four corners, in the centre, and the midway of all of these set points to firmly stick the section onto the display board. Start with the bottom sections as this will give you the best straight line result.

If you are not planning to move the puzzle for quite some time, then join all the sections together. If you are planning to move the puzzle, do not join the sections together as this will (and has) damaged some of the pieces.

The foam stick tapes and the display boards were purchased from U-Line, and the contact paper (in bulk, 18" X 75 yds) was bought at a local hardware store.

I hope this makes mounting your puzzle for display easier and less burdensome.

David Genys,
Ajax, Ontario, Canada

Spoiler Alert:   Herman from France and Dan & family from Pennsylvania USA have discovered there is a repetitive pattern to the cut which can help speed up the completion of the puzzle.

Do you have any tips or techniques to share? We'd love to hear from you. Anything from initial sorting through to mounting or framing the puzzle. Any help for others on this challenge will be greatly appreciated.

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