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P. 25
Smooth-Cast Series Polyurethane Plastic
®
General Purpose Casting Resins tool used to cast a black
Smooth-Cast® 380
Smooth-Cast® Tooling Resins electronics utility housing.
Smooth-Cast® 380 and 385 are mineral filled urethane casting resins that are
very hard and durable. They also cure with low shrinkage. Smooth-Cast® 380
features ultra high density and very low cost. Smooth-Cast® 385
has high compressive and flexural strength. Fully cured castings are
tough, machinable and paintable.
Tooling resins are ideal
for making industrial parts,
foundry patterns, vacuum forming
molds, and some ceramic applications.
Smooth-Cast® 385 master molds can be used Rigid Smooth-Cast® 385
to cast silicone rubber production molds. Propeller Model
Feather Lite® - It Floats In Water!
Feather Lite® is a heavily filled low-density
urethane casting resin. Cured plastic is
lightweight (it floats in water!) and can be carved,
machined, sanded, etc. Feather Lite® can be pigmented
with SO-Strong® color tints and finished castings can be
painted. Feather Lite® yields more plastic per pound/kg.
than other resins, lowering the cost per casting.
Feather Lite®
ventriloquist
puppets
are easy to
handle. 6 ft (1.8 m) long Feather Lite®
flying fish on display at the
New Jersey Exhibition Center.
Feather Lite® fishing lures that float!
A:B Mix Ratio Mixed Viscosity Pot Life Demold Time Hardness (Shore D) Shrinkage (in./in.) Specific Volume (cu. in./lb.) Ultimate Tensile Elongation at Break % Color Hardness Shrinkage (cu. in./lb.) Elongation at Break %
Product Name A:B Mix Ratio Mixed Viscosity Pot Life Demold Time (Shore D) (in./in.) Specific Volume Ultimate Tensile Color
Smooth-Cast® 380 1:1 pbv 1,140 cps 6 min. 60 min. 82D 0.0025 15.9 3,550 psi 1.43% Tan
Smooth-Cast® 385 1:5 pbw 3,000 cps 20 min. 2 hrs. 85D 0.0006 17.3 3,100 psi 1% Beige
Feather Lite® 1:1 pbv 410 cps 8.5 min. 2 hrs. 58D 0.003 41.3 2,160 psi 1.6% Beige
Learn more at: www.smooth-on.com 24
®
General Purpose Casting Resins tool used to cast a black
Smooth-Cast® 380
Smooth-Cast® Tooling Resins electronics utility housing.
Smooth-Cast® 380 and 385 are mineral filled urethane casting resins that are
very hard and durable. They also cure with low shrinkage. Smooth-Cast® 380
features ultra high density and very low cost. Smooth-Cast® 385
has high compressive and flexural strength. Fully cured castings are
tough, machinable and paintable.
Tooling resins are ideal
for making industrial parts,
foundry patterns, vacuum forming
molds, and some ceramic applications.
Smooth-Cast® 385 master molds can be used Rigid Smooth-Cast® 385
to cast silicone rubber production molds. Propeller Model
Feather Lite® - It Floats In Water!
Feather Lite® is a heavily filled low-density
urethane casting resin. Cured plastic is
lightweight (it floats in water!) and can be carved,
machined, sanded, etc. Feather Lite® can be pigmented
with SO-Strong® color tints and finished castings can be
painted. Feather Lite® yields more plastic per pound/kg.
than other resins, lowering the cost per casting.
Feather Lite®
ventriloquist
puppets
are easy to
handle. 6 ft (1.8 m) long Feather Lite®
flying fish on display at the
New Jersey Exhibition Center.
Feather Lite® fishing lures that float!
A:B Mix Ratio Mixed Viscosity Pot Life Demold Time Hardness (Shore D) Shrinkage (in./in.) Specific Volume (cu. in./lb.) Ultimate Tensile Elongation at Break % Color Hardness Shrinkage (cu. in./lb.) Elongation at Break %
Product Name A:B Mix Ratio Mixed Viscosity Pot Life Demold Time (Shore D) (in./in.) Specific Volume Ultimate Tensile Color
Smooth-Cast® 380 1:1 pbv 1,140 cps 6 min. 60 min. 82D 0.0025 15.9 3,550 psi 1.43% Tan
Smooth-Cast® 385 1:5 pbw 3,000 cps 20 min. 2 hrs. 85D 0.0006 17.3 3,100 psi 1% Beige
Feather Lite® 1:1 pbv 410 cps 8.5 min. 2 hrs. 58D 0.003 41.3 2,160 psi 1.6% Beige
Learn more at: www.smooth-on.com 24
