The Castaldo Gelato is also Super High Strength, just like the same
product in the mustard color. I’ve been using the Gelato, and I
really like it. Progress carries it, and Gesswein told me it would be
in the new catalog.
Here’s what it says on the Castaldo website:
Castaldo Econosil Jewelry Molding Rubber is a harder, firmer version
of our Castaldo Super High Strength jewelry molding rubber at a lower
Just like our Castaldo Super High Strength jewelry molding rubber,
Econosil is a putty-like material that makes strong, tough,
production rubber molds.
Molds made of Castaldo Econosil cut like butter, give waxes with a
high shine finish and require no messy sprays or powders. Waxes
Castaldo Econosil a brick-red/brown color and is lined with special
release paper on both sides.
Castaldo Econosil Jewelry Molding Rubbers is available in strips 18"
x 2 7/8" x approximately 3/8" / 45.7 cm x 7.3 cm x approximately 6
mm. Special sizes are available on request.
Chicago area, Illinois, USA
Metalsmith, Certified PMC Instructor
Studio 925; established 1992