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Unassembled wooden puzzle sheets, steel marbles, and accessories in a box

ROKR

ROKR Marble Explorer LG503 3D Wooden Jigsaw Puzzle 260 Pieces Stem Toy

SKU CH-1946-QKH3Z

A 260-piece wooden marble run that assembles into a working mechanical model measuring roughly 9.9 by 8.9 by 8 inches

  • Suggested age14
  • Age groupAdult

Style Marble Explorer

  • Build a working marble run with 260 precision-cut wooden pieces
  • Includes 10 steel marbles and metal shaft for smooth rolling action
  • Assembles to 9.92 x 8.94 x 7.99 inches for desktop display
  • Step-by-step illustrated guide plus video support for 6-hour build
  • Develops engineering thinking and fine motor skills for ages 14+

Mechanical marble run kit

The ROKR Marble Explorer LG503 is a 3D wooden jigsaw puzzle that assembles into a working marble run. It contains 260 pre-cut wood pieces, ten steel marbles, a steel shaft, sandpaper, wax and illustrated English instructions. The model is designed for builders aged 14 and above and takes roughly six hours to complete.

Hobbyists wanting a hands-on build

This kit suits teens and adults who enjoy mechanical model construction and want a finished piece that doubles as desktop decor. It is not intended for younger children who need simpler snap-together toys, nor for buyers looking for a motorised or programmable marble machine.

Finished model fits a desk

When assembled the structure measures 9.92 by 8.94 by 7.99 inches, so it sits comfortably on a desk, shelf or bedside table. The 260-piece count and six-hour build time give a substantial project without requiring specialised tools or a large workshop area.

How it compares

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

Price $28.99
Typical for this category: the median of 236 items is $28.99.

Specifications

More details
Suggested age14
Age groupAdult

Other versions of this model

1 more in the same range

Questions about this item

What tools or extra parts do I need before starting the Marble Explorer LG503 build?

The box contains pre-cut wood sheets, 10 steel marbles, steel shafts, sandpaper, wax and illustrated English instructions — no external tools are required.

Can the 260-piece marble run sit on the same desk as my older ROKR City Series models without overhanging?

Assembled dimensions are 9.92 × 8.94 × 7.99 inches, so measure your available surface against those figures to confirm fit.

How do I verify the marble run works correctly once assembled?

Run the 10 included steel marbles through the track; they should travel the full course without jamming, confirming gear meshing and shaft alignment are correct.

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