Three rectangular sample chips clipped to a steel carabiner in teal, deep green and mustard, each moulded with a dense maze-like relief pattern and stamped with the Checkerspot name and butterfly mark.
  • A close view of one chip in deep teal, the maze-like relief pattern filling the frame around an embossed butterfly and the Checkerspot wordmark.

Cast polyurethane (PU) is a liquid-to-solid plastic used for molding and casting. Checkerspot® Cast Bio-Polyurethane is made from renewable algae oil. This material can be used as a replacement for synthetic plastics.

Composition

Algae

Handling Notes

  • Behaves like conventional cast PU
  • Release agent required for most molds
  • Algae oil PU may bond to uncoated surfaces

Applications in Craft

Keywords

Provenance

Checkerspot, Alameda, California. Acquired 2025.

In Use

Have you used this material?

Please contact Mellanee Goodman, Program Director, Curator, and Materials Specialist, to start a conversation about submitting your work for inclusion on this site.

mgoodman@centerforcraft.org