Product design · Digital fabrication

Burl

An adaptive shelf whose 150+ spring-loaded pins conform around whatever is pressed into it, holding objects in almost any orientation.

Role
Individual project · IDSN-524 Physical Product Design
Finished Burl shelf in red with its spring-loaded pin array
Finished prototype
Burl · CAD assemblyDrag to rotate · Scroll to zoom

More than 150 individually spring-loaded pins deform around anything pushed into the array. Their continuous pressure and friction hold the object in place, so compatible objects can be supported in many orientations without fixed shelves, hooks, or object-specific fixtures.

Inspiration. From first sketches to the DN-40 alarm clock.

Burl is an adaptive shelf developed as an individual project for IDSN-524, Physical Product Design, where the brief was interactive shelving. I drew on the DN—40 alarm clock — its form, color, and strong presence on a desk — and applied that sensibility to a shelf for people whose stored objects change often.

Sketches

Perspective sketch of the shelf
Sketch · Perspective
Sheet of early sketches
Sketches

Early concepts

Sketch of a wall-mounted pin shelf above a cabinet
Sketch · Wall concept
Render of a large wall-mounted pin board holding books
Concept render

DN-40 alarm clock

DN-40 alarm clock in orange
Inspiration · DN-40 alarm clock
Render of the DN-40 alarm clock
Inspiration · DN-40 render

Building process. CAD, then cardboard, wood and paint.

I designed the complete system in CAD, laser-cut the internal components from wood, and 3D-printed the enclosure. The hard parts were packaging the dense pin array, holding tolerances across many moving parts, getting reliable friction locking, and finishing mixed fabrication processes into one cohesive product. Every part was sanded and painted for the final prototype.

CAD

CAD render of Burl's enclosure and pin array
CAD

In construction

Cardboard form study of Burl on a table
Cardboard prototype
Laser-cut wooden frame holding the spring-loaded pins
Laser-cut pin array
Spray-painting the red enclosure
Finishing the enclosure

Finished. On the desk.

Burl on a desk beside a laptop
In use
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