I bought this on a whim as I thought it would be fun to show my 3 year old great grandson when he comes to visit next month. I've worked with both wooden and plastic models, so I figured it wouldn't be difficult to put them together. All parts are made from stamped or laser cut sheet metal, very precisely cut and none are cracked or broken. My thumb hurt a little and chipped on all the pieces, but someone with longer nails wouldn't have my problem. Everything went pretty smoothly, but the final marble runs require some finesse. Judicious use of pliers will help join parts in multiple places. Be sure to use wax to lubricate all surfaces that move relative to each other, especially the cams! The end result was pretty durable and fun to use. Only one area is a bit loose after playing for a while so I'll probably add some glue to that joint. It took about 4 or 5 hours over 2 days to assemble and was hard to put down once I started. I think a skilled 12 year old could handle the build with a little help. Highly recommended!
Colorful Venice 1000 Piece Jigsaw Puzzle By Colorcraft
20 Review
1000 Piece Animal Puzzle Color Challenge Round Mandala Cat Jigsaw Puzzle - Bgraamiens Puzzles Mandala Cat Edition
14 Review
100-Piece Under The Sea Glow-In-The-Dark Puzzle For Kids Age 5+ - Colorful Illustrations Of Underwater Fish, Plants, And Sea Creatures - Award-Winning And Perfect For Learning And Play
12 Review
1000 Piece Mandala Jigsaw Puzzle - Creative Colorful Black Fantasy Bgraamiens Color Challenge Puzzle
17 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
ROBOTIME 3D Wooden Puzzle Mechanical Gear Clock Owl Model Kit For Teens & Adults - DIY Building Set
36 Review
Robotime 3D Wooden Craft Kit: Brain Teaser Games Mechanical Gears Set With Cog Coaster And Steel Balls - Best Building Toys For Kids
47 Review
ROBOTIME 3D DIY Solar Car Puzzle Kit - Fun Arts and Crafts for Teens and Adults - Top Learning Toy and Birthday Gift (Curiosity Rover)
25 Review