AEROMARINE PRODUCTS WHITE URETHANE CASTING RESIN FAST SET HALF GALLON KIT!

Description

AEROMARINE PRODUCTS
WHITE
URETHANE POLYMER CASTING RESIN
HALF
GALLON KIT
AeroMarine Products' half gallon kit of white urethane polymer casting resin contains:
1 Quart Part A
and
1 Quart Part B
**Always wear a respirator or self–contained breathing apparatus when working with urethanes.**
Do NOT spray!  Our urethanes are only for pouring applications
.
AeroMarine Polymer White Casting Resin is a fast setting, low odor, "water thin", 75D durometer system.  Our casting resin is ideal for casting decorative figurines, picture frames, and industrial parts.  With a 30 minute demold time, it allows you to make rapid prototypes or production runs.
AeroMarine Polymer Casting Resin is a white color when cured.  We sell urethane colorants for this casting resin. Or, you can paint it  (Krylon Fusion paint
recommended).  AeroMarine casting resin cures to a hard plastic form and is very tough and impact resistant.  It somewhat resembles PVC pipe when cured.  Shrinkage is usually unmeasurable.  We also sell urethane mold release to use with this casting resin.  Check our other Ebay listings for related items such as our silicone for mold making.
NOTE: Make sure that the casting resin, tools, containers and ambient temperature are all at 70F before you begin pouring the casting resin.  If you do not have everything at 70F, the casting resin will take much longer to cure.  Temperatures higher than 70F or large mixes can cause the casting resin to cure faster.
Plastic tools and mixing containers are recommended as urethanes are moisture sensitive.
This item ships in 1 box.
RETURNS:
30 DAY RETURN POLICY.  Buyer pays return shipping.
AeroMarine Products White Urethane Casting Resin Specifications:
Shore Hardness:  75D
Tensile Strength:  2390psi
Temperature Restrictions: 140F
Mix Ratio: 1:1 by volume
Color:  White
Work Life: 3 minutes
Demold Time: 30 minutes
Once each side is measured and weighed in separate clean plastic containers, pour both A and B into a third clean plastic container for mixing.
**Pour immediately after mixing!**
Best practices when using urethane casting resin
Never mix less than about 3 ounces of product.
When manufacturers design and test their resins, they normally write the specifications for 100 gram batches, which is about 3 ounces.There are two bad things that can happen when mixing a smaller batch.  Because the sample is small, it is much more difficult to get the mix ratio correct. Also, these mixtures are exothermic, meaning that they generate heat in order to cure.  A tiny batch does not generate enough heat to cure the resin properly.
Do not mix
with drill motors
.  Mixing with an electric drill causes problems.  Drills don’t get into every corner of the mixing container.  Also, if they spin too fast, they can generate friction in the resin, causing it to exotherm out of control and resulting in premature curing.  Powered mixing also can generate a lot of air bubbles in the urethane.
If you use a mold release, let it dry for a while
.  A spray can of mold release contains a lot of solvents and propellants. These compounds need to evaporate off the surface so they don’t cause bubbles.  Check the dry time of the mold release from the directions on the label.
Don’t vary the mix ratio
. Unlike some polyester resins, altering the mix ratio to vary the cure cycle doesn’t work with urethanes.
Coloring our white casting resin
. Add the urethane colorant drop by drop, until you get the color desired
.
Mix
everything twice
Mix the two components together in a clean plastic container, then transfer the mixture to another clean plastic container and mix them again.  The theory is that the liquids clinging to the sides and bottom of the containers don’t get mixed well.  By transferring the mixture to another clean plastic container, you are assured that everything is well mixed.  Any unmixed material stays in the first container.
**When using fast, water-thin casting resins, you may only have time to mix it once.  Since it is water thin, it will probably mix well in one mix
.
Mix in plastic containers
.  Paper cups contain moisture which may adversely affect the polyurethane.  Avoid waxed paper cups because the wax may melt and contaminate the resin.
Also, do NOT use any wood implements when mixing urethanes--wood contains moisture as well.
How to avoid air bubbles
Air bubbles in urethanes are almost always caused by moisture.  Do everything possible to avoid moisture getting into the mix.  This includes replacing the lids onto the containers promptly after use as well as avoiding using the product during rainy days or times of high humidity.  Do not pour against an unsealed water based product such as plaster or hydrocal.  Instead seal plaster or hydrocal with something like Krylon Clear Acrylic.  Also, you can use an aerosol nitrogen blanket that can increase the shelf life of the urethane during storage.
Avoid mixing a large batch
The larger the batch, the more exotherm or heat is generated in the cure cycle.  If you are casting a large part, consider mixing small batches to make the process more manageable.  Thickness of the pour also affects the exotherm and cure speed.  A very thin pour will take much longer to cure than a thick pour.
Shake or stir very well before use
The liquid components may settle in the containers during storage.  Therefore, you must shake or stir the components very well separately before mixing.  Let it sit a few minutes to let any bubbles rise to the surface after shaking the container.
Test
Always make a test determine the feasibility of your process.  There are many unforeseen factors that can affect the outcome of your project.  Running a controlled test may be inconvenient, but it can make the “Learning Curve” of processing these products much easier.
For industrial or professional use only
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