Glossary / Molds & Stamps

Pineapple molds

Also called lozenge mold

One-piece dip molds with a lozenge-patterned inside that gives glass a surface like a pineapple.

What it is

A pineapple mold is a cylindrical or truncated-cone one-piece mold with a patterned inside, which produces a decoration resembling the surface of a pineapple.⁠⁠[1] Carlo Donà makes them in six sizes, from 38 × 58 mm to 135 × 220 mm.⁠⁠[3] Like optic molds, they’re described by their number of points, which changes the look of the pattern.⁠⁠[2]

How it’s used

The gather is blown into the mold to take the pattern. A pineapple-mold class at Public Glass covers setting up the gather to go into the mold, choosing pipes, keeping the pattern from melting out, and not getting stuck, as well as using frit with the mold and trapping bubbles in the pattern.⁠⁠[2]

History

Corning’s study of Renaissance Venetian glassworking treats pineapple dip-molding as one of its techniques, with recreations of a three-bubble cup and a footed goblet decorated this way.⁠⁠[1]

Sources

  1. Corning Museum of Glass — The Techniques of Renaissance Venetian Glassworking, "Pineapple (lozenge) type"
  2. Public Glass — Pineapple Mold class
  3. Carlo Donà — Pineapple molds

Pineapple molds in the archive 7

Photo Tool Maker Sellers
Pineapple Mold, 100mm x 185mm -, LargeA pineapple-pattern mold, 100 mm across and 185 mm tall. Carlo Donà 2
Pineapple Mold, 130mm x 220mm - Extra, LargeA pineapple-pattern mold, 130 mm across and 220 mm tall. Carlo Donà 2
Pineapple Mold, 37mm x 55mm -, Extra SmallA pineapple-pattern mold, 37 mm across and 55 mm tall. Carlo Donà 2
Pineapple Mold, 45 × 105 mmA pineapple-pattern blow mold, 45 mm by 105 mm. Jordan Kube 1
Pineapple Mold, 52mm x 90mm -, SmallA pineapple-pattern mold, 52 mm across and 90 mm tall. Carlo Donà 2
Pineapple Mold, 60mm x 100mm -, MediumA pineapple-pattern mold, 60 mm across and 100 mm tall. Carlo Donà 2
Pineapple Mold, 70mm x 130mm - Medium/LargeA pineapple-pattern mold, 70 mm across and 130 mm tall. Carlo Donà 2