Description
This heavily filled low-density urethane casting resin is lightweight and floats in water.
Feather Lite™ has a 1A:1B by volume mix ratio and requires pre-mixing of parts A & B.
The cured plastic is strong and can be carved, machined, drilled, and sanded. It can be pigmented with color tints before casting and painted after curing.
Due to its low density, it yields more plastic per kg than other resins, reducing the cost per casting.
Suitable for art and industrial design applications like sculpture reproduction, fishing lures, prototype model making, and casting doll heads and figures.
Technical Properties
- Mix Ratio By Volume: 1A:1B
- Pot Life: 8.5 minutes
- Cure Time: 2 hours
- Shore Hardness: 58 D
- Specific Gravity: 0.67 g/cc
- Specific Volume: 1.49 cm³/g
- Color: Beige
- Elongation @ Break: 1.6%
- Ultimate Tensile: 14.9 MPa
- Tensile Modulus: 1,076 MPa
- Flexural Strength: 23.7 MPa
- Flexural Modulus: 1,133 MPa
- Compressive Strength: 21.2 MPa
- Heat Deflection Temp: 60 °C
- Compressive Modulus: 370 MPa
- Shrinkage: 0.003 mm/mm
- Mixed Viscosity: 410 mPa·s
Instructions
Store and use at room temperature (23°C). Use as soon as possible due to limited shelf life. Ensure low environmental humidity and good ventilation. Wear safety glasses, long sleeves, and rubber gloves.
Applying A Release Agent
A release agent is necessary for demolding. Use a mold release agent specifically for mold making. Apply a liberal coat to all surfaces contacting the plastic. Silicone rubber molds usually do not require a release agent, but using one will prolong mold life. Apply release agent with a soft brush for thorough coverage, followed by a light mist coating. Let dry for 15 minutes. Conduct a small test application to ensure suitability.
Mixing
The material is heavily filled, and the filler separates during storage. Pre-mix both Part A & Part B in their original containers before dispensing. After dispensing equal amounts into a mixing container, mix thoroughly, scraping the sides and bottom. Avoid splashing. Do not delay between mixing and pouring.
Pouring
Use with room size ventilation and avoid inhaling fumes. Castings will be hot immediately after curing. Pour the mixture at the lowest point of the containment field to minimize air entrapment. Replace lids immediately after dispensing to prolong shelf life.
Use XTEND-IT™ Dry Gas Blanket to extend shelf life.
Curing
Ensure adequate ventilation and avoid inhaling fumes. Let casting cool to room temperature before handling. Demold time depends on mass and mold configuration. Low mass castings take longer to cure. For rotational or hollow castings, backfill with rigid foam for reinforcement if exposed to temperatures above 30°C.
Post Curing
Post curing is optional but enhances properties. Allow curing at room temperature, then 4-6 hours at 65°C. Let cool before handling.
Performance
Cured castings are lightweight, rigid, and durable. They resist moisture, moderate heat, solvents, and dilute acids. They can be machined, primed/painted, or bonded to other surfaces. Remove any release agent before bonding. Wear a dust mask when machining.
