Castaldo LiquaCast No Shrinkage Liquid Mold Rubber

Castaldo LiquaCast is a two-part liquid mold rubber designed for professional jewelers and wax carvers who need accurate copies of delicate models without the heat and pressure of vulcanization. This formula produces pink rubber molds with no shrinkage and outstanding reproduction of fine design details — ideal for preserving intricate wax carvings, organic models, or any original that cannot withstand conventional vulcanizing conditions.

Use LiquaCast whenever you need a backup copy of a wax design, for limited production runs, or any time you cannot risk losing your original model. The rubber cures at room temperature in 16–24 hours, and each kit includes precise, detailed instructions for use.

Vacuuming is recommended for best results. If a vacuum pump is not available, good results can still be obtained by dipping the model in liquid rubber rather than pouring directly, or by brushing on a small quantity of the mixture and inspecting for bubbles before pouring the full mold.

Please note: Castaldo USA was sold to a company in the United Kingdom, and all Castaldo products are now manufactured in the UK. This specific LiquaCast formula — which mixes at a 10:1 ratio — is no longer being produced. The current version mixes at a 1:1 ratio. All Castaldo jewelry manufacturing products are intended for professional use only by persons familiar with jewelry casting techniques.

Features

• Two-part liquid mold rubber system — no heat or pressure vulcanization required
• Zero shrinkage for accurate, true-to-original reproductions
• Produces pink rubber molds with exceptional detail reproduction
• Cures at room temperature in 16–24 hours
• Suitable for wax models, organic materials, and heat-sensitive originals
• Ideal for backup copies, limited production runs, and protecting irreplaceable originals
• Includes detailed instructions for use
• This formula mixes at a 10:1 ratio (Part A to Part B)

Specifications

Available Options

Notes

• This listing covers the original 10:1 mix-ratio formula. The current Castaldo LiquaCast formulation mixes at 1:1 and is a separate product.
• Not suitable for use with models that require high-heat vulcanization resistance testing.
• For professional use only — intended for individuals experienced in jewelry casting techniques.

California Prop 65 Warning:
Cancer and Reproductive Harm. www.P65warnings.ca.gov.