So is each layer loose, as in you have to build the stack each time?
Yes. The short 2x4 sections on top and bottom of the 4x4s/2x4s are nailed and glued, but they're all separate assemblies. That way I can adjust how tall I want the car. The next project is to make a riser for my jack to be able to lift the car high enough to put it down on the 3rd level.
The idea behind it was 1: to be able to adjust the height, 2: to make them lighter when you move them around, store them, etc, and 3: so I could build more layers if/when needed. That way I could use a lift in the future and be able to use them as safety blocks as well - kind of like jack stands.







