DO NOT PRINT THIS MODEL!!!! I AM CURRENTLY FIXING SOME MAJOR ISSUES RELATED TO THIS MODEL!!!

This is a combination of multiple models I created, and it showcases a class 1, 2, and 3 lever in an understandable way. This is great for teaching the different types of levers, can be used in Rube Guldberg machines (what I designed it for), and many more applications. 

The contraption is only made up of 14 easy to assemble models, and they can be assembled using nothing more than hot glue or some other adhesive. This was designed to be easy to produce, so it should be pretty easy to put together. 

If you want to you can just put something under the bottom such as carboard or books because the bottom lever goes below the frame. If you want to use something that looks better, you can download and print the leg and leg fastener stl files. This will add 12 parts - eight of which being tiny cylinders to keep the legs in place - since you probably only need two fasteners per leg (small cylinders). If you decide to use all four per leg you will need to print 16 fasteners and four legs. 

The extra holes allow for addons to be implemented. The holes are 0.125 inches in diameter which means any and all pins I use for them are 0.12 inches in diameter for a 0.05 inch clearance. The holes are spaced 0.25 inches from center to center. That means if you want to, you can also design your own custom addons which include even more levers!

If you use any of these models and publish a picture or spinoff, please add a link to this webpage, thanks! This helps a lot as this will be my first ever model uploaded like this.