Projects
Contests
Teachers
5
cooljupjup
Message
Follow
Inbox
Edit Profile
View Profile
Holland
Joined October 7th, 2012
13
Instructables
12,858
Views
136
Comments
13
Followers
Message
Follow
Inbox
Edit Profile
View Profile
Hi!, I`m Levi I`m back building! and i play Videogames like Fifa 14/15
Profile
Instructables
Collections
Favorites
Discussions
Settings
cooljupjup's Instructables
Railgun, a Knex Roller Coaster
Knex 6 Foot Ferris Wheel
Knex Roller Coaster: Fire Dragon
Launch Looper!
SuperSonic
Knex Son of Serpent Remake
Speed of Sound [Cancelt]
Knex Mobile Standard for Filming Instructions!
Knex Roller Coaster Stealth Force!
My Custom Sort SS Coaster! [Cancelt]
Set Promoted Items
View all
13
Instructables »
Achievements
100+ Comments
Earned a bronze medal
10K+ Views
Earned a bronze medal
Welcome to Instructables! Pick what you love and
discover inspiring projects from our community
Customize Feed
5
Holland
Joined October 7th, 2012
13
12,858
136
13
Inbox
![Speed of Sound [Cancelt]](https://content.instructables.com/FG1/BAAT/HNICUYCZ/FG1BAATHNICUYCZ.jpg?auto=webp&crop=1.2%3A1&frame=1&width=306)
![My Custom Sort SS Coaster! [Cancelt]](https://content.instructables.com/F5P/1LP7/HM768I89/F5P1LP7HM768I89.jpg?auto=webp&crop=1.2%3A1&frame=1&width=306)