This was done in 17 hours by my 15 year old, 17 year old and I. My son and I tend to be mechanical. Some preliminary work is required (removing pieces that are not part of the puzzle). Be extremely careful when sorting, we almost lost a few pieces that were attached to the rubbish. The instructions weren't great, but I don't know if there's an easier way to describe the connection process. You need to refer the box and many views to the final installation. There were two walls that are not visible in the photos and we had to use the elimination process. After full construction; The lock is very strong and larger than expected. It got 4 stars out of 5 because two pieces arrived broken. We were able to install them without a complete failure. I would buy this product again or another 3D puzzle from this manufacturer.
1000 Piece Mandala Jigsaw Puzzle - Creative Colorful Black Fantasy Bgraamiens Color Challenge Puzzle
17 Review
BeginAgain Butterfly A To Z Puzzle - Educational Wooden Alphabet Puzzle - Kids 2 And Up
12 Review
Mudpuppy Magical Friends 4-In-A-Box Puzzles, Ages 2-5, Each Measures 6โX8 - Chunky Puzzles With 4, 6, 9 And 12 Pieces - Difficulty Level Grows With Child โ Beautifully Illustrated Puzzles, Multicolor
16 Review
Colorful Venice 1000 Piece Jigsaw Puzzle By Colorcraft
20 Review
6-Pack Speed Cube Set: 2X2 3X3 4X4 Pyramid Skewb Ivy Stickerless Puzzle Cubes - Perfect Christmas/Birthday Gift For Kids, Teens & Adults!
32 Review
Wooden Roller Coaster Marble Run Puzzle - ROKR 3D Mechanical Model For Self-Crafting, Decoration, And Educational Gifting
21 Review
ROBOTIME 3D Wooden Puzzle Mechanical Gear Clock Owl Model Kit For Teens & Adults - DIY Building Set
36 Review
Engage Your Child'S Curiosity With The 5 In 1 STEM Kit - The Perfect Educational Building Toy For 8-12 Year Old Boys And Girls
36 Review