Gravity Defying Illusion - Rolls up Hill!

I saw something similar to this a few months ago and recently I decided to print it, but after searching I couldn't find it; so I decided to just make my own real quick, but that turned into perfecting it…

After multiple prototypes^. I'm super happy with how it turned out and it doesn't have any supports or require any glue to put together!

This needs to be on a pretty level surface or it might roll off the end or not start rolling at all.

How it Works

In the video above you can see that the Cones are actually rolling down. This is because when it's in the middle the Cones are sitting on the tips (photo on the left), and when it's on the edge of the Base the Cones sit on center (photo on the right), so it actually sits higher on the edge of the Base.

Printing

I printed it with Bambu Pla Basic, but anything should work as long as it prints accurately. I printed a few of the cones with Pla Silk and the pin was too tight to push in.

Make sure your Build Plate is clean as the Pin has a small surface area, and the ends of the Base can warp.

Also the base needs to be printed with adaptive layer height or the cone won't roll.

I have two Print Profiles up and they're both print by object so the base can be printed using adaptive layer height. 

Assembling

As the video bellow shows push the pin into one of the cones (it shouldn't be a tight fit). Then slide the other cone over the pin, and turn both cones clockwise (you should here it click twice) if it's to hard to turn then trim a little off the tabs on the pin as shown in the photo.

Optional 

Use bambu's scraper or a razor blade as shown in the video below to smooth out the inner edges of the base. This will make it roll better and work more reliably but isn't necessary.

Thank You