Ball Roll
Lifts

Harvey Fein · 4 kinds of lift · 23 machines

I became interested in ball rolls in the summer of ’25.

The traditional method: bent steel wire · Video “Infinio” by Kinetic ART

After trying the traditional methods of making them, using steel or copper wire, none of which I felt comfortable with, I settled on 3/16” acrylic rods with water jet connectors. I have been working with plastic for some years now. It also gave me the opportunity to design a whole new set of tools.

I engaged the services of someone that does 3D printing to print the bending tools I needed and ultimately the switches and various “tricks.” These are notable for their color. After the first 2 or 3, I standardized the size to 12” square. This set parameters that forced the design and increased the challenge.

I became fascinated with the different methods of getting the ball from the intake space at the bottom to the discharge on top, and I am experimenting with other lift designs. What follows are three solutions and a collection of miscellaneous ideas.

01 / 04 · 6 machines

Screw Lifts

Screw lifts are the most common and can be found in most traditional ball rolls. As the screw turns it forces the ball upwards. From there, it’s all downhill.

02 / 04 · 5 machines

Magnetic Lifts

Magnetic lifts are something I think I developed. It works by passing the ball from magnet to magnet. As the magnets align an arm strips the ball from one magnet and deposits it on the next.

03 / 04 · 6 machines

Lever Lifts

Most of which I found on YouTube and modified. They combine a mechanical lever system with a magnetic pickup. Makes for some interesting solutions.

04 / 04 · 6 machines

Novelty Lifts

Some ideas are too intriguing to pass up. This is a collection of those ideas. They proved to be the most challenging. Lots of problems to solve. No “road map.”

Coming soon

Processes

How it all comes together, from bent acrylic rod to the finished run. Harvey is still writing this chapter.