Holden's Mold Making Latex High Viscosity HX-974™

HX974BrushWhiX ⓘ 1584190D-256C-7E46-B43E-BF14D24F36A1
Latex

High viscosity, brushable latex for detailed glove molds.

  • Apply 10-20 layers for durability
  • Suitable for plaster, concrete, wax casting
  • Not for high-exotherm resins
  • Store at 23°C, avoid freezing
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Danger

H315 - Causes skin irritation.
H317 - May cause an allergic skin reaction.
H319 - Causes serious eye irritation.
H334 - May cause allergy or asthma symptoms or breathing difficulties if inhaled.
€ 63.21

(€ 52.24 without 21% VAT)

This item is temporarily out of stock

Description

This white brushable mold-making latex is vulcanizable and designed for vertical surface applications. It is suitable for creating glove molds of 3-dimensional originals and statuary. Apply between 10 and 20 layers, allowing the rubber to cure into a highly elastic, wear-resistant mold that captures fine details. These molds are suitable for casting plaster, concrete, and wax.

Applications include molds for ornamental concrete castings, stone veneer, architectural gypsum ornament, and wax castings like candles. Note that latex is suitable for limited casting of some resins. However, higher exotherm casting materials will degrade the mold faster, making silicone rubbers a better choice for production casting of resins.

Allergy Warning: Carefully read the label. Do not use if you have known allergies to rubber latex. Consult a doctor if unsure. Discontinue use and seek medical help if an allergic reaction occurs.

Instructions

  • Keep out of reach of children.
  • Avoid use if you have known allergies to natural latex.
  • Avoid contact with eyes. Flush eyes with water for 15 minutes and seek medical attention.
  • Remove from skin with waterless hand cleaner followed by soap and water.
  • Children should not use this product without adult supervision.
Processing Recommendations
  • Do not allow the product to freeze; it will become unusable.
  • Store and use at room temperature (23°C).
  • This product has a limited shelf life and should be used promptly.
  • Colder temperatures slow working/cure time; warmer temperatures reduce working time.
  • Wear safety glasses, long sleeves, and rubber gloves to minimize contamination risk.
Preparing the Model
  • Ensure the model is free of contaminants like oil, grease, and dirt.
  • Most models do not require a sealer or release agent before applying the latex.
  • Models containing sulfur must be sealed (e.g., sulfur-based clays).
  • If unsure about latex release, perform a small-scale test on an inconspicuous area.
  • If rubber sticks or darkens, apply a sealer like a barrier coat or shellac and let it dry thoroughly.
  • Secure the model to a firm, flat, non-porous surface before applying rubber.
Product Preparation
  • The latex rubber is a single component.
  • Optionally, decant into a smaller container for easier handling.
Applying, Curing & PerformanceApplying the Rubber
  • Stipple the initial layer thinly onto the model, ensuring all details are covered without pooling.
  • Create a wide, even flange of latex rubber around the model's perimeter.
  • Apply additional layers when the previous layer is tacky (1-4 hours between coats).
  • Alternate brushing direction for each layer to reduce stress and warping.
  • Apply a minimum of 10 layers to achieve a thickness of 0.16 cm for smaller items and 0.32 cm for larger items.
Optional - Thickening the Rubber
  • After the 4th layer, latex can be thickened with powder for undercuts and deep details.
  • Allow thickened latex to dry completely (8-10 hours) to prevent delamination.
  • Note: Thickened rubber loses some elasticity and tear strength.
Optional - Reinforcing the Rubber
  • Reinforce by embedding fabric into wet latex and saturating with more latex.
  • Use materials like fine mesh burlap, cheese cloth, or muslin.
Curing the Rubber
  • Full cure occurs after ~7 days at room temperature (23°C).
  • For faster curing, heat the rubber in a dedicated oven (43°C to 49°C) for 8-12 hours.
Applying a Support Shell
  • Once fully cured, apply a rigid support shell (mother mold) to support the rubber mold during casting.
  • Brush the cured latex with a barrier coat before applying the mother mold.
  • Common materials include brushable urethane plastic, gypsum, and PVA fibers.
Using the Mold
  • Avoid exposing the mold to oils, grease, or solvents (except specific oils).
  • Wash molds with soap and water.
  • For plaster casting, wet the mold with a 1% detergent solution to aid in releasing air bubbles.
  • For concrete casting, use specific oils on the mold surface.
Mold Performance & Storage
  • The mold's physical life depends on usage and materials cast.
  • High exotherm materials will quickly deteriorate the mold.
  • Clean molds with a soap solution and dry thoroughly before storing.
  • Store away from UV light and excessive heat (>49°C).
  • For best results, store molds with a gypsum casting inside to retain shape.

Specifications

Color White
Full Cure Time 7 days at 23°C
Storage Temperature < 49°C
Specific Gravity 0.95
Shrinkage 5-10%
Viscosity 7,000-9,000 cps
Solids Content 56-60%
Copper Content < 8 ppm
Manganese Content < 8 ppm
Potassium Hydroxide (KOH) 0.800000
Mechanical Stability 650 seconds
Accelerated Cure Time 8-12 hours at 43-49°C
Minimum Layers For Thickness 10 layers
Thickness For Smaller Items 0.16 cm
Thickness For Larger Items 0.32 cm
Available in Latex
Product Color Storage Temperature Cure Time Viscosity Shelf Life Operating Temperature Minimum Layers For Thickness Thickness For Smaller Items Thickness For Larger Items Full Cure Temperature Range Full Cure Time At Elevated Temperature Full Cure Time Specific Gravity Shrinkage Solids Content Copper Content Manganese Content Potassium Hydroxide (KOH) Mechanical Stability Accelerated Cure Time
Holden's Mold Making Latex HX-80™ Natural Below 49°C 7 days at 23°C Low Limited 23°C 10 layers 0.16 cm 0.32 cm 43°C to 49°C 8-12 h. - - - - - - - - -
Holden's Mold Making Latex High Viscosity HX-974™ White < 49°C - 7,000-9,000 cps - - 10 layers 0.16 cm 0.32 cm - - 7 days at 23°C 0.95 5-10% 56-60% < 8 ppm < 8 ppm 0.800000 650 sec. 8-12 h. at 43-49°C
Holden's HX-200™ - - - - Limited 23°C - - - - - - - - - - - - - -
Holden's Frisket Mask Latex - - - - - 23°C - - - - - - - - - - - - - -
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