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* Price: $34.59

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Mold Max 29NV Quart Kit 2.3Lb (801343)
Mold Max 29NV does not require vacuum degassing. Mix ratio is 100A:10B by weight. Working time is 45 minutes and cure time is 6 hours at room temperature. Mold Max 29NV will reproduce the finest detail and is suitable for a variety of industrial and art related applications including making molds for reproducing prototypes, furniture, sculpture and architectural elements. Cure time can be reduced with Accel-T cure accelerator. Mold Max 29NV can be used to cast a variety of materials including concrete, wax, gypsum, low melt alloys/metals and urethane, epoxy or polyester resins. Important; you must weigh Part A & B components using a gram scale to be successful with Mold Max 29NV. Features include: fast cure time 6 hours at room temperature, does not require vacuum degassing, and has a low viscosity for easy mixing and pouring. Size: Quart Kit 2.3Lb

INSTRUCTIONS

PREPARATION
Safety Use in a properly ventilated area ("room size" ventilation). Wear safety glasses, long sleeves and rubber gloves to minimize contamination risk. Wear vinyl gloves only. Latex gloves will inhibit the cure of the rubber.

Store and use material at room temperature 73F(23C). Storing material at warmer temperatures will also reduce the usable shelf life of unused material. These products have a limited shelf life and should be used as soon as possible.

Applying a Sealer / Release Agent - Mold Max rubber may be inhibited by sulfur based clays resulting in tackiness at the pattern interface or a total lack of cure throughout the mold. If compatibility between the rubber and the surface is a concern, a small-scale test is recommended. Apply a small amount of rubber onto a non-critical area of the pattern. Inhibition has occurred if the rubber is gummy or uncured after the recommended cure time has passed. To prevent inhibition, a "barrier coat" of clear acrylic lacquer sprayed directly onto the pattern is usually effective. Allow to thoroughly dry.

Although not usually necessary, a release agent will make demolding easier when casting into or over most surfaces. Ease Release 200 is a proven release agent for making molds with silicone rubber and for releasing new silicone from cured silicone.

Because no two applications are quite the same, a small test application to determine suitability for your project is recommended if performance of this material is in question.

MEASURING & MIXING
Materials should be stored at about 73F(23C). These products have a limited shelf life and should be used as soon as possible. Wear safety glasses, long sleeves and rubber gloves to minimize contamination risk. Before you begin, pre-mix Part A (base) thoroughly to re-disperse fillers that may have settled. Using a gram scale, dispense required amounts of parts A and B into a mixing container and mix for 3 minutes. Scrape the sides and bottom of the container several times.

POURING
For best results, pour your mixture in a single spot at the lowest point of the containment field. Let the rubber seek its level up and over the model. A uniform flow will help minimize entrapped air. The liquid rubber should level off at least .5" (1.3 cm) over the highest point of the model surface.

CURING & PERFORMANCE
Curing / Post Curing - Allow the mold to cure fully (at least 6 hours) at room temperature 73F(23C) before demolding. Post curing the mold an additional 4 hours at 150F(65C) will eliminate any residual moisture and alcohol that is a by-product of the condensation reaction that can inhibit the cure of some resins and rubbers. Allow mold to cool to room temperature before using. Do not cure rubber where temperature is less than 65F(18C).

Accelerating Mold Max 29NV - Accel-T tin cure silicone rubber accelerator will accelerate the cure time of Mold Max 29NV. Note: working time is reduced in proportion to the amount of Accel-T added.
Thinning Mold Max 29NV - Silicone Thinner is a non-reactive silicone fluid that will lower the mixed viscosity of tin cure (condensation) or platinum cure (addition) silicone rubber products. Silicone Thinner offers the following advantages: [1] A lower mixed viscosity (A+B) means that the rubber will de-air faster when vacuuming; [2] Mixed rubber (A+B) will flow better over intricate model detail; [3] Silicone Thinner will lower the ultimate shore hardness (durometer) of cured silicone rubber; [4] Pot life (working time) is increased in proportion to the amount of Silicone Thinner used.
A disadvantage is that ultimate tear and tensile are reduced in proportion to the amount of Silicone Thinner added, however knotty tear properties of the Mold Max Series rubbers are unaffected. It is not recommended to exceed 10% by weight of total system (A+B). See the Silicone Thinner technical bulletin for full details.

Making Brush-On Rubber Molds - Due to low viscosity, Mold Max 29NV is not recommended for making brush-on rubber molds. If you want to make a brush-on rubber mold, Mold Max Stroke was developed especially for this purpose.

Mold Performance & Storage - The physical life of the mold depends on how you use it (materials cast, frequency, etc.). Casting abrasive materials such as concrete can quickly erode mold detail, while casting non-abrasive materials (wax) will not affect mold detail. Before storing, the mold should be cleaned with a soap solution and wiped fully dry. Two part (or more) molds should be assembled. Molds should be stored on a level surface in a cool, dry environment.


Recreating an Antique Frame Using Mold Max 29NV No Vacuum Required Silicone Rubber