brucine (broo'-seen), 1) n. Pharm., Chem. a bitter, poisonous alkaloid, C23H26N2O4, obtained from the nux vomica tree; 2) n. Bruce Bortin's 'low-impact' weblog

Monday, January 11, 2010

Acorn Squash Blowmold project

Acorn Squash Blowmold project, originally uploaded by dumbeast.

Date with Lynne-Rachel to make the mold on Mon Jan 18 at 10:00. These photos & videos are investigations of symmetry & undercut issues.

Investment: From what I remember from college, what I did was a

  • 1 part mortar (see below) : 2 parts casting plaster (by volume) dry-mixed
  • hand-sift mix into water, not too thick to pour easily (little island in middle of bucket)
  • allow to wet for about 3 minutes, then mix just until uniform
  • pour over bottom half of release-coated squash stuck upside down in the bottom of a bucket with wax
  • agitate for a minute to free bubbles
Upon setting (overnight)
  • plonk out of bucket
  • If squash doesn't want to come out, take it home & bake at 350 for an hour. Now it's nice & mushy.
  • Remove squash from mold. Serve with brown sugar & butter
  • Heating mold helps drive out uncombined water, too.
Quikrete Data Sheet Briefly:
Composition and materials:
QUIKRETE® Mortar (Masonry) Mix consists of a uniformly blended mixture of fine sand, and type N masonry cement.

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