Mold Max™ 60

Mold Max™ 60 is a Shore 60A tin catalyzed silicone mold rubber formulated for applications requiring high heat resistance (up to 560°F/294°C). It features a low mixed viscosity and cured rubber exhibits very low linear shrinkage. Parts A & B are mixed 100A & 3B by weight. Pot life is 40 minutes and cure time is 24 hours. Applications include making foundry patterns, flat pattern reproductions and casting low-melt metal alloys such as tin and pewter.

Features

  • Developed for high-heat resistance applications and will withstand up to 560°F/294°C.
  • Features a low mixed viscosity and cured rubber exhibits very low linear shrinkage.

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AMT Composites Shipping

  • Shipping may only be to a physical address within the borders of South Africa. No P.O Box’s allowed.
  • Shipping to outlying or remote areas like farms and game reserves may attract an additional fee.
  • The delivery time to city areas is usually between 2 and 5 working days*. This excludes weekends and public holidays.
    *Reckoned from time of dispatch to time of arrival to client. This is an estimate and not guaranteed.

Courier Service

We use 4 courier companies for delivery.

With sophisticated track and trace equipment, you can pinpoint exactly where your parcel is, from the moment it is dispatched by us, until it’s safely handed over to you the recipient.

Your parcel is well packaged and bubble wrapped before delivery. All parcels can be insured for the journey to your door.

Delivery Charges

We charge an address and weight based shipping fee.

Shipping cost is provided at checkout.

Our delivery service only runs from Monday to Friday. Saturday morning deliveries can be done by special arrangement only and at an additional charge. Please contact us to arrange. We reserve the right to re-quote the delivery fee should this become too expensive.

In-Store Pickup (Not currently available)

In-Store Pickup is available in Johannesburg, Cape Town & Durban. Mondays to Fridays only.
You are welcome to place your order online, pay for it and collect it from our  branches. You will need to bring in a print out of the order for collection. Please ask for online sales on arrival.

At AMT Composites we want you to be 100% happy with any purchase you make from us.

Changing your Mind / Right to Cancel

If you change your mind for any reason, goods can be returned to us for a full refund if notified to us within 7 days of delivery; you have a further 7 days to dispatch the goods for their return to us. Goods returned after 7 days will incur a 15% restocking fee of the items being returned.

NO GOODS manufactured or sold by Advanced Materials Technology Pty Ltd will be accepted for a credit if returned after one (1) calendar month of original invoice date.

To return goods that are not faulty (i.e. because you changed your mind) they must be unused and, in the condition, they were delivered to you in. This does mean that, unless found faulty, we are unable to accept returns for:

  • Opened containers of resin, hardener, silicone or chemical release agent, unless found to be faulty or defective.
  • Unrolled and improperly re-rolled fabrics, unless found to be faulty or defective.
  • Any product that you have subsequently cut, shaped, broken or modified, unless found to be faulty or defective.

Refund of Delivery Charges (Cancelled Orders)

If you return an order in its entirety, then your outbound delivery charges will also be refunded (for orders within the South Africa’s Local Area’s.

If you return only part of an order, then the outbound delivery charge refund will be calculated based on the total postage cost of the original order (using standard service) minus the cost to send the items you are keeping (using standard service). Due to the way that shipping costs are incremented, this will often result in no delivery charge refund being due.

Faulty or Defective Goods

Any goods found to be faulty or defective and notified to us within 7 days of delivery can be returned to us for a full refund.

Refund of Delivery Charges (Faulty/Defective Goods)

If you are returning faulty or defective goods, then your outbound and return delivery costs will be refunded in full (for orders from within South Africa’s Local Area’s.

In the event that you are returning faulty or defective goods which were ordered as part of a larger order then the outbound delivery charge refund will be calculated based on the total postage cost of the original order (using standard service) minus the cost to send the items you are keeping (using standard service).

Please check the box to acknowledge our return’s policy, by doing so you agree to our Return’s Policy of AMT Composites stated above.

Ask AMT

Get true expertise & assistance. Speak with one of our professional consultants in Johannesburg, Cape Town or Durban. Call 011 392 4232.

Mold Max™ 60 Instructions

Please Note: THI-VEX™ Silicone Thickener is NOT recommended for use with Mold Max™ 60.
Important: you must weigh Part A & B components using a gram scale to be successful with Mold Max™ 60

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.

Mold Max™ 60 Preparation

Materials should be stored and used in at room temperature (73°F/23°C). 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. Rubber may be inhibited by sulfur base 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.

Applying A Sealer/Release Agent

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. Mann Ease Release™ products are available from AMT Composites.

IMPORTANT: To ensure thorough coverage, lightly brush the release agent with a soft brush over all surfaces of the model. Follow with light mist coating and let dry for 30 minutes.

Measuring & Mixing Mold Max™ 60

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. After mixing parts A and B, vacuum degassing is recommended to eliminate any entrapped air in liquid rubber. Your vacuum pump must pull a minimum of 29 inches of mercury (or 1 Bar/100 KPa). Leave enough room in container for material expansion. Vacuum material until it rises, breaks and falls. Vacuum for 1 minute after material falls.

Mold Max™ 60 Pouring/Curing/Post Curing

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 1/2” (1.3 cm) over the highest point of the model surface. Allow the mold to cure overnight (at least 24 hours) at room temperature (73°F/23°C) before demolding. Post curing the mold an additional 4 – 5 hours at 125°F (51°C) will eliminate any residual moisture and alcohol that is a by-product of the condensation reaction. This water and alcohol can inhibit the cure of some casting resins. Allow mold to cool to room temperature before using. Do not cure rubber where temperature is less than 65°F /18°C.

Decreasing demold time with Accel-T™ Silicone Cure Accelerator:

Important: Thoroughly Pre-mix Accel T™ with Part B before adding Part A. Be aware that the working time is drastically reduced with the addition of Accel T™. Also, library life of cured rubber is reduced in proportion to the amount of Accel-T™ added.

Using The Mold

New silicone rubber molds exhibit natural release characteristics. Depending on what is being cast into the mold, mold lubricity may be depleted over time and parts will begin to stick. No release agent is necessary when casting wax or gypsum. Applying a release agent such as Ease Release™ 200 (available from AMT Composites) prior to casting polyurethane, polyester and epoxy resins is recommended to maximize mold life.

Mold Max™ 60 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.

Mold Max™ 60 Silicone Mold Rubber Product Information | Smooth-On, Inc.

Weight 3 kg

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