Here’s a fun project that you can make that will amaze your friends. When done, a tiny jack is contained inside a cube with a hole in it. How did they get in there? How was it made? The kit includes an aluminum cube to practice on and a brass cube for your finished puzzle. Producing the finished cube requires a series of drilling and boring processes explained in the step-by-step illustrated instructions that come with the kit.
Detailed Equipment List You Will Need for this Project
- 4-Jaw Self-Centering Chuck, P/N 1075 (2.5″) or P/N 1076 (3.1″)
- Chuck Adapter, P/N 37090 (included for fastening the chuck to the rotary table)
- 3/8″ diameter end mill holder, P/N 3079
- 1/8″ End Mill, 3/8″ Shank, P/N 7402 (2-Flute)
* NOTE: If you already own a CNC mill you do not need a rotary table. You can, instead, write a G-code sequence to accomplish the task.
The J1000 kit includes both an aluminum and a brass billet of 3/4″ square stock cut to slightly over 3/4″ long ready for you to make this interesting puzzle on your Sherline mill. Included are a P/N 3079 3/8″ end mill holder, and P/N 7402 1/8″ End Mill, 3/8″ Shank (2-Flute), a key ring and instructions. Complete kit instructions are included that take you step-by-step through the facing, drilling and boring processes needed to free up the jack within the raw stock.
Click on the images below to view examples of finished cubes in various materials and sizes.