This set was fun to build. The timing is pretty accurate, I got about 5 minutes faster than 12 hours on the default configuration. The kit includes instructions on how to adjust the pendulum if it is too fast or too slow. Some recommendations/notes when purchasing this kit. I recommend buying extra paraffin as the amount that came in my kit wasn't enough. All gears grind and rub, I had ticker issues initially simply from not grinding the first gear enough. You will need a little over 2 pounds of loose material (sand/rocks) to weight the pendulum. On page 9, the instructions don't align the gears correctly, just rotate the smaller gears 90 degrees and you're done.
Dinosaur Puzzle Wooden Jigsaw Puzzles For Kids Ages 3-12, 60 Pieces 2 Pack Boys Girls Gift
23 Review
Colorful Venice 1000 Piece Jigsaw Puzzle By Colorcraft
20 Review
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
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
New Speed Cube Set - 5 Pack Magic Cubes Collection For Kids - Pyramid, Megaminx And More!
37 Review
Wooden Roller Coaster Marble Run Puzzle - ROKR 3D Mechanical Model For Self-Crafting, Decoration, And Educational Gifting
21 Review
Get Ahead With Vdealen'S 8-Pack Of Exceptional Speed Cubes! Ideal Gift For Teens, Kids, And Adults On Christmas And Birthdays!
24 Review