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Laser-cut wooden perpetual calendar kit with visible gears, displayed from front side and back angles

ROKR

ROKR 3D Wooden Puzzle Perpetual Calendar STEM Toy

SKU CH-KAY0-ZM57N

A laser-cut wooden kit builds a working perpetual calendar covering 2018 to 2040 for ages 14 and up

  • Suggested age14
  • Age groupAdult

Style Perpetual Calendar

  • Precision laser-cut plywood pieces fit together without glue
  • Calculates weekdays for any date from 2018 to 2040
  • Visible gear mechanism creates a working desk ornament
  • Detailed English manual guides a 5-hour build for ages 14+
  • Family-friendly project develops engineering thinking through hands-on assembly

Mechanical Perpetual Calendar Kit

This laser-cut wooden model functions as a working perpetual calendar covering the years 2018 to 2040. It is designed for adults and teens aged 14 and up who enjoy hands-on engineering challenges. The pre-cut plywood pieces interlock without glue, creating a mechanical display piece for a desk or shelf.

Sustained Assembly Experience

Building the kit requires patience and steady focus over several hours rather than a quick burst of activity. The precision-cut gears and levers must be fitted carefully to ensure the date-calculation mechanism operates smoothly. The process rewards methodical builders who appreciate seeing a complex gear train come together step by step.

Finished Piece Characteristics

Once assembled, the calendar sits as a static mechanical sculpture with visible moving gears and no electronic components. It draws zero power and produces no noise, making it suitable for quiet office or home environments. The plywood construction offers a smooth tactile surface that remains stable under normal indoor conditions.

How it compares

Measured against everything we stock in STEM Kits & Building Blocks, at today’s prices. Recalculated every night.

Price $14.99
Cheaper than about 77% of the 236 comparable items (median $28.99).

Specifications

More details
Suggested age14
Age groupAdult

Other versions of this model

5 more in the same range

Questions about this item

Does the Perpetual Calendar generate any noise or heat when it is displayed on a desk all day?

The mechanical calendar has no motor or electronics, so it runs silently and produces no heat while sitting on a desk.

What tools or supplies must I already have to assemble the laser-cut wooden kit?

The pre-cut plywood pieces interlock without glue, and the English manual guides the build, so no extra tools or adhesives are required.

Will the calendar’s date range of 2018 to 2040 still be useful alongside older perpetual calendars I already own?

Yes, the 2018 to 2040 range covers the current period and future decades, complementing any vintage calendars that end earlier.

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