Free Form® Habitat® Black Epoxy Putty is a mix-by-hand putty that is used to create textured or highly detailed display pieces. Habitat® Black is solvent-free and contains no VOC’s. Working time is 60 minutes and cure time is 16 hours at room temperature (73°F/23°C). Epoxy cures to a very hard, heat resistant material that is easily painted. Use with Habitat® Black Folding Powder – fold powder into epoxy putty to thicken and reduce sag when applied to a vertical surface. Folding Powder also reduces stickiness and makes the epoxy more handle-able.
Safety Use in a well-ventilated area ("room size ventilation). Generally, if you use any epoxy system on a regular basis, wearing a NIOSH approved respirator is advised. Wear safety glasses, long sleeves and rubber gloves to minimize skin contact. Wear nitrile or vinyl gloves only.
Rate Of Coverage - Assuming a thickness of 0.25 in. (6.3 mm), 1 lb. (454 g) of Free Form Habitat Black will cover approximately 71.6 in2 (462 cm2).
Materials should be stored and used at room temperature (73 F/23 C). This product has a limited shelf life and should be used as soon as possible. Mixing should be done in a well-ventilated area. Wear safety glasses, long sleeves and rubber gloves to minimize contamination risk. Before mixing materials, apply Folding Powder to work surface in a 1/4 (6.3 mm) layer. Powder gloves with Folding Powder to eliminate sticking.
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.
Measuring - Free Form Habitat Black comes as two parts. Dispense equal amounts of Part A and Part B. These products have a limited shelf life and should be used as soon as possible.
Mixing - This product is mixed by hand. You must wear gloves when mixing this material, wearing vinyl gloves reduces inhibition risk. Knead parts together while folding powder into mixture. The amount of powder to add depends on desired working consistency. The more powder you add, the thicker the mixture becomes. Fold mixture into itself repeatedly until desired consistency is attained (3-5 minutes or a minimum of 20 folds).
Apply by gloved hand to horizontal, vertical or inverted surface. Important; pot life and cure time are reduced with elevated temperatures.
Stamp, Sculpt or Mold - Once in place, putty can be stamped using a rubber stamp (Rebound 25 silicone). Apply alcohol to stamp detail before using for precise detail and to keep stamp clean. Sculpt using gloved hands or tools. Putty can also be pressed into a silicone rubber mold to reproduce detail.
Epoxy surface can be smoothed with water or isopropyl alcohol. Option; cover putty surface with clear plastic food wrap and smooth or sculpt with hand or tool. Leave wrap in place until material cures and remove. Cured surface will have a high gloss finish.
Curing and Heat Resistance
Habitat Black will cure in 16 hours at room temperature. Elevated heat will cure epoxy faster. At an ambient temperature of 150 F/60 C, the material will cure in as little as 30 minutes. A heat gun may also be used, as long as the surface temperature of the Habitat Black does not exceed 212 F/100 C. Putty cured at room temperature with a minimum thickness of (1.27 cm) will resist temperatures up to 165 F/74 C.
Post Curing - For higher heat resistance, cured Habitat Black can be heat post-cured in a dedicated industrial oven. Cure at 175 F/80 C for two hours, followed by three hours at 212 F/100 C. Thin sections may need to be supported during post curing. Allow material to cool to room temperature before use.
Cured castings are rigid and durable. They resist moisture, moderate heat, solvents, dilute acids and can be machined, primed/painted or bonded to other surfaces (any release agent must be removed). If machining cured Free Form Habitat Black plastics, wear dust mask or other apparatus to prevent inhalation of residual particles.
Cured Free Form Habitat Black can be primed and then painted with acrylic enamel paints. Let paint fully dry before putting part into service.
Removing Uncured Free Form Habitat Black - Remove as much uncured material from the surface as possible. Clean any residue with soap and water. Optional - Use E-POX-EE KLEENER available from Smooth-On.