Tumbling Block Clock Illusion

Einstein once said that “Time is an Illusion.”

My attempt was to make a clock that takes that idea quite literally.

This Tumbling Block Clock transforms the linear flow of time into a three-dimensional paradox. Inspired by a mesmerizing 3D tumbling block pattern, I created a timeless optical illusion constructed from interlocking rhombi (i.e. diamonds) made of three contrasting colors of wood.

This Instructable explains how you can create a wooden mosaic that fools the eye and challenges the mind. It’s part art, part geometry, and part philosophical wink to Einstein.

So I thought if time is really an illusion, then let’s make it a pretty one.

(Also thought saying Tumbling Block Clock fast 3 times is fun).

Materials

1. Three contrasting woods (light, medium, dark tones — e.g., maple, cherry, walnut)
2. ¼" or ½" plywood backer board
3. Clock movement kit
4. Wood glue
5. Sandpaper (120 → 220 grit)
6. Finish (tung oil, shellac, or polyurethane)
7. Hanging hardware

Tools

1. Table saw
2. Miter gauge
3. Clamps
4. Drill (for clock shaft hole)

*Amazon affiliate link added for reference

The tumbling block illusion is built from a tessellation of equilateral rhombi (l call them “diamonds”) arranged into groups of three to form a hexagonal shape 3D-Cube illusion.

Each “Cube” is formed by three diamonds of light, medium, and dark tone wood. I used maple, cheery and walnut.

When this Cube pattern is combined and aligned correctly, your eyes will see depth where there is none.

To create the diamonds, you rip three wood strips on a table saw into equal-width strips. The width of your wood defines the cube size.

Next, cut 60° diamonds from each of colored wood strips,

You’ll need to use or make a stop block so your diamond length is the same size as its width.

Precision is key. Small variations will distort the cube illusion, so I suggest you practice on some scrap wood first to save money before gluing.

Tip: Cut extra pieces on your final boards so you can sort for best grain contrast later.

Lay out your cubes first — alternating the light, medium, and dark tones for the best depth.

Once satisfied, glue them together in groups of three. (You could also glue them down on a plywood backer to make things a bit easier.)

After gluing, just let dry overnight, then sand smooth and flat.

At this point, your flat pattern will seem to rise up from the surface to form a 3D landscape.

Drill a centered hole for the clock shaft and install your clock movement kit.

Attach the hands and test-fit before tightening.

Contrast is key — black or brass hands work well against the wood pattern.

Apply your favorite finish — oil-based finishes bring out warm contrast and make the cubes pop.

Once dry, add hanging hardware, install the battery, and place on wall that friends will see so your can let them marvel at your master-time-piece. (Pun intended)

Einstein described time as an illusion ... something our perception just stitches together to synchronize and coordinate our perspectives of reality.

This tumbling block clock brings that idea to life, merging science, art, and craft into a single object that literally makes the illusion of time visible.

Each tick of this clock can be a reminder of how we position ourselves for the reality we want to create.