Introduction: Puzzle Box (Unabox)

About: I like to design and build random things.

This is a modified version of the Unabox which was built by TXTCLA55 as shown here:

This simplified version can be built with limited tools and a basic skill level. The drawing is included in the video description. Note that the drawing units are in inches verses millimeters shown in Make Magazine.

Step 1: Tools/Materials


  • Saw
  • Drill & bits
  • Hammer (optional)
  • Sander
  • Tape measure
  • Pencil


  • 4 foot long 1x6
  • 4 inch long 2x4
  • 3/8” and 1/4” dowels
  • Screws or Nails (optional)
  • Glue
  • Wood filler
  • Paint or Stain

Step 2: Overview

Refer to these images during build.

Step 3: Bottom and Sides

Cut bottom to 8.25” x 5.125”. Cut two sides to 8.25” x 2.75”

Step 4: Ends

Cut ends as shown. Add blind hole to T-shaped end. This will be the locking feature for the top.

Step 5: Fixed and Rotating Top

Cut fixed top and rotating top as shown. Note that this piece should start from the same size piece as the bottom (8.25” x 5.125”). Add thru holes as shown.

Step 6: Slotted Top

Cut slotted top as shown. Add blind 3/8” hole to end. I used a drill and wood file to make the slot.

Step 7: Inside Block

Cut block from a 2x4. Add blind hole as shown.

Step 8: Pins

Cut dowels as shown.

Step 9: Assembly - Step 1

Attach sides and ends to the bottom piece. This can be done with glue, nails, screws, etc. I used a pocket hole jig and glue.

Step 10: Assembly - Step 2

Add inside block and pins. The block can be attached as desired. The pins are glued into these pieces.

Step 11: Assembly - Step 3

Attached fixed top and slotted top as shown. I used glue and wood screws from the inner side.

Step 12: Assembly - Step 4

Assembly as shown. Insert locking pin as the final step.

Step 13: Final Product

Step 14: **Update - Added Drawings**

Step 15: 3D Print Version

I added a 3D Print version which includes design improvements.

Remix Contest

Participated in the
Remix Contest

Teach It! Contest Sponsored by Dremel

Participated in the
Teach It! Contest Sponsored by Dremel

Hand Tools Only Contest

Participated in the
Hand Tools Only Contest