Epoxacast

EpoxAcast® 650 is a mineral filled general purpose casting epoxy resin that is low cost and versatile. It features a low mixed viscosity for minimal bubble entrapment. Choose Fast, Medium or Slow catalyst to fit your project. You can also use HT Hardener to give your castings higher heat resistance.

EpoxAcast® 650 is used for making hard dies for metal stamping as well as patterns and fixtures. It is also used for electrical encapsulation to extend the life cycles and enhance the performance of potted electronic devices. The high compressive strength of EpoxAcast® 650 makes it ideal for making stamping dies for production pressing of metal ornaments.

EpoxAcast 650 Base (Part A) & Hardener (Part B) sold separately. Choose from 101 FAST, 102 MEDIUM, 103 SLOW or HT Hardener

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EpoxAcast® 655 (formerly Metalset® A-30) is a versatile aluminum filled castable epoxy resin that is very hard and strong. It is dimensionally stable, even when mass cast up to 512 in3/ 8,390 cm3. Different hardener speed options are available depending on your project requirements. Maximum heat resistance is achieved using HT HIGH TEMP hardener (up to 225°F/108°C).

Cured EpoxAcast® 655 epoxy has high physical properties and is used for a variety of applications including making hard tooling, vacuum forming dies/molds, injection molds, foundry patterns, jigs and fixtures and metal forming dies. Depending on project requirements, Part A Base can be mixed with 101 FAST, 102 MEDIUM, 103 SLOW or HT HIGH TEMP hardeners.

EpoxAcast 655 Base (Part A) & Hardener (Part B) sold separately. Choose from 101 FAST, 102 MEDIUM, 103 SLOW or HT Hardener

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EpoxAcast® 670 HT (formerly 20-136) is an epoxy casting compound which offers high heat resistance up to 350° F/177° C if post cure schedule is used. EpoxAcast® 670 HT features a relatively low viscosity that ensures minimal bubble entrapment. EpoxAcast® 670 HT also offers an extra long working time of 3 hours.

Castings cure with negligible shrinkage and are very hard, very strong and heat resistant. EpoxAcast® 670 HT is ideal for making vacuum form molds, foundry patterns, forming dies & fixtures, hard rollers, industrial parts and high impact tools. EpoxAcast® 670 HT is also suitable for encapsulation applications or for use as a high temperature epoxy adhesive for bonding a variety of surfaces.

Epoxacast 670 resin

Epoxacast 670HT /1,31kg an epoxy casting compound which offers high heat resistance up to 350° F/177° C if post cure schedule is used. EpoxAcast® 670 HT features a relatively low viscosity that ensures minimal bubble entrapment. EpoxAcast® 670 HT also offers an extra long working time of 3 hours. 80,97 EUR

Epoxacast 670 resin

Epoxacast 670HT /5.26kg an epoxy casting compound which offers high heat resistance up to 350° F/177° C if post cure schedule is used. EpoxAcast® 670 HT features a relatively low viscosity that ensures minimal bubble entrapment. EpoxAcast® 670 HT also offers an extra long working time of 3 hours. 269,66 EUR

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EpoxAcast® 690 is a UV resistant clear casting epoxy resin that is ideal for making clear jewelry/beads or replacement lenses for kit cars and other applications requiring a rigid, clear finished product. EpoxAcast® 690 can be colored with SO-Strong® color tints.

EpoxAcast® 690 is also suitable for making clear molds and prototype parts. Castings cure with negligible shrinkage and are very hard and strong. EpoxAcast® 690 is also suitable for encapsulation applications for electronic assemblies where component identification is necessary. Recommended casting thickness maximum; 2 in. / 5 cm.

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Preparation– Avoid breathing fumes - use in a well ventilated area at minimum. NIOSH approved respirator is recommended. Wear safety glasses, long sleeves and rubber gloves to minimize skin contact.

Materials should be stored and used in a room temperature environment (73°F/23°C). Elevated temperatures will reduce pot life. EpoxAcast® 670 Resin and Hardener must be properly measured and thoroughly mixed to achieve full, high-strength, solid-cure properties.

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.

Applying A Release Agent – For releasing epoxy from non-porous surfaces such as resin, metal, glass etc., use Ease Release 200 or 205 (available from Smooth-On) to prevent adhesion.

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

Pre-mix Part A Thoroughly - Separation may have occurred in transit or storage. Pre-mix for 2 minutes prior to dispensing to a uniform consistency using a straight edge paddle (paint stirrer) or turbo mixer (drill attachment).

Measuring / Dispensing – Accurate measurement by weight is required for the material to cure properly and develop full physical properties. Dispense Parts A and B in proper proportions into clean plastic, metal or wax-free paper containers. You must use an accurate scale (gram scale or triple beam balance scale) to weigh these components properly. Do not attempt to measure components by volume.

Adding Color & Fillers - EpoxAcast® 670 HT can be colored with SOStrong® color tints (from Smooth-On). Pre-mix tint with Part A thoroughly and then add Part B. A variety of dry fillers can also be added. Pre-mix dry filler with Part A before adding Part B.

Mixing – Be sure mixing utensils are clean and free of any potential contaminants such as dirt, dust or grease. Mix Parts A and B thoroughly for at least 3 minutes with a square edged mixing stick. Be aggressive and scrape sides and bottom of mixing container several times. Use the square edge of mixing stick to bring material off of the sides of container and blend. If using a drill mixer, follow with hand mixing as directed above to ensure thorough mixing.

Vacuuming - EpoxAcast® 670 HT is low in viscosity compared to other epoxy cating systems and does not require vacuum degassing. If you choose to vacuum the material, subject mixture to 29 h.i.g. mercury in a vacuum chamber until mixture rises, breaks and falls. Allow for 5 times volume expansion in mixing container.

Pouring – If casting EpoxAcast® 670 into a rubber mold, pour mixture in a single spot at the lowest point of the mold. Let the mixture seek its own level. A uniform flow will help minimize entrapped air.

If making vacuum forming molds, it is best to use piano wire (15/1000 inch gauge) to make vacuum holes.

Cure Time: Refer to specified Cure Times in Handling Properties section. Cured material will be hard and unable to penetrate with a finger nail. Cured epoxy can now be dry sanded. If machining or sanding, wear NIOSH approved mask to prevent inhalation of particles. Pot life and cure time values are dependent on mass and mold configuration, as epoxies are mass-sensitive.

Heat Curing - For best results, EpoxAcast® should be heat cured in an dedicated oven. Cure at 175° F / 80° C for two hours, followed by three hours at 300° F / 150° C. Allow material to cool to room temperature before use.

Painting – Cured EpoxAcast® can be painted or primed and then painted with acrylic enamel paints. Let paint fully dry before putting part into service.

Removing Epoxy – Uncured / Non-curing epoxy: Scrape as much material as possible from the surface using a scraper. Clean the residue with E-POX-EE KLEENER®, lacquer thinner, acetone or alcohol. Follow safety warnings pertaining to solvents and provide adequate ventilation.