CNC & Machining

The latest DIY ideas, techniques and tools for the manufacture of metal, wood, plastic, ceramic and composites. We talk about machining, using a lathe to machine metals like steel, brass, and aluminium. We make chips fly!

Bicycle-Powered Treehouse Elevator

Bicycle-Powered Treehouse Elevator

Ethan Schlussler of Sandpoint, Idaho, built this clever bicycle-powered treehouse elevator to make it easier to reach his nearly 30-foot-high treehouse. “It was originally a 20-something speed bicycle, but first gear wasn’t slow enough, so I cut the large sprocket off the front, and welded it on the rear to get a lower gear. I also had to do away with the de-railers and make a new chain tensioner,” he writes.

Behind the Build: Vacuum Table

Behind the Build: Vacuum Table

I have one of the coolest bosses in the world. I love to make things and he pretty much lets me make whatever I want then pays me to do it. He also has a hobby; he likes to work with leather. So when he got his hands on a leather cutting drag knife for our lab’s Shopbot he asked if I could build him a vacuum table to hold sheets of leather securely on the machine I was happy to comply. But the project turned out to be a real design challenge.