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Directions For Use:
TOOL COTE
is brush applied with a stiff brush.
Prior to applying the TOOL
COTE, it is important that the model is completely released, by brushing
on two coats of primary Grease-It I release agent, allowing
several minutes drying between coats. When dry, apply several mist coats of
Grease-It II and dry thoroughly between coats, using a hot air gun, so as to
obtain a smooth, high gloss finish that is suitable to accommodate the brush
on procedure for the TOOL COTE surfacing.
When the Grease-It release
system is completely dry, the TOOL COTE may be applied according to
the following procedures:
1. Remove the rim from the Part
A can with the rim remover.
2. Add contents of Part B
container to Part A can.
3. Mix and blend thoroughly, by
hand, for two minutes, with TOOL COTE mixing sticks.
4. Frequently scrape the sides
and bottom of the can to incorporate all material that want to cling to
these surfaces.
5. Apply directly to the pattern
or the backside of the Metal-It shell with a Tool Cote brush .
6. Brush out thoroughly,
breaking any air bubbles, and working into detail.
7. Vibrate pattern, while
applying TOOL COTE, to further dislodge trapped air.
8. Heat treat the
TOOL COTE to eliminate the last air bubbles, by dancing the hot air gun
back and forth, slowly over the entire surface, for a period of 1-2 minutes.
Note: If
TOOL COTE is the surface, allow to cure for 1 hour (to a bubble gum
state), and then apply a second coat.
If Metal-It or nickel is
the surface, eliminate this step.
9. If using temperature coils,
insert and position.
10. While the TOOL COTE
is still wet, proceed immediately to casting the structural backup.
As a Patching and Repair Material -
TOOL COTE is widely used as an excellent surface patch and repair
compound, by simply roughing up or routing out the damaged areas, and
slightly overfilling with a mixture of
TOOL COTE
A and B. The patch or repair is then allowed to set up, following
recommended cure schedule for TOOL COTE that you are using as a
patching material. When the patch is hard it is then sanded smoothly into
the surface of the mold, such that it is barely noticeable to the touch.
This will provide excellent service in production, and yield the same high
chemical and heat resistance properties of the original surface treatment.
SURFACE PREPARATION TO PREVENT ADHESION:
To prevent adhesion to the mold, use a
GREASE IT release agent. The following are recommended; GREASE IT II, GREASE
IT IV, GREASE IT WAX P, or GREASE IT WAX L. For best results, apply in a few
thin coats, drying between coats. Porous surfaces, i.e. wood, plaster, etc,
must be sealed thoroughly before release is applied. Use multiple coats of a
good coating, such as: a high-grade lacquer or urethane lacquer.
SURFACE PREPARATION FOR ADHESION:
For applications where adhesion is desired, the surface must be cleaned,
abraded and dried. Sandblasting and mechanical roughing are the preferred
ways of abrading surfaces to be bonded. For added adhesion to metals, use
Primer 200. Make sure all surfaces are clean, dry and free from moisture.
AIR RELEASE:
Use HAPCO'S ANTI-AIR to aid in air release (see Technical Bulletin). In some
products, ANTI-AIR can cause a slight haze to cloudiness. This has no effect
on properties.
MIXING:
IMPORTANT: Before each use, mix Part B thoroughly before proportioning
out the required amount. Components may separate and should be mixed
before each use. Mix, only when ready to use, by adding the curing agent to
the resin portion and blending together thoroughly. Be sure to scrape and
stir in all material sticking to the sides and bottom of the mixing
container. Do not use paper containers or wooden mixing sticks. They may
contain moisture. For best results, use plastic or coated containers, and
metal or plastic sticks.
MACHINE MIXING AND DISPENSING:
Use HAPCO'S RAPIDFIL and/or RAPIDSHOT
Dispensing Equipment for fast, reliable, and efficient dispensing.
SURFACE COATS:
Brush apply a first coat of HAPCOAT surface coat, taking care to eliminate
all trapped air bubbles. Use a hair dryer, moving quickly over the surface,
while brushing to help eliminate air bubbles. Take care to eliminate surface
air. Allow to tack up, and brush on a second coat of Hapcoat. After the
second coat tacks up, apply the backup.
COVERAGE:
HAPCOAT materials are available in convenient and safe pre-measured
containers in the following kit sizes:
Kit Size Approximate Coverage Rate
1/2 pint kits 200 square inches
Pint kits 400 square inches
Quart kits 800 square inches
Gallon kits3200 square inches
SHRINKAGE:
Shrinkage or dimensional variation is largely influenced by 5 factors:
1. Mass ( total volume and thickness)
2. The temperature of the material
3. Maximum temperature reached during the exotherm (reaction). The faster
the material, the higher the exotherm, the greater the shrinkage.
4. The temperature of the mold
5. The stability of the mold
Geometry, part thickness, and total volume vary in each design, therefore,
the customer is responsible to test and determine the shrinkage factor to be
used. The values in the brochures are for comparative reference only, using
ASTM testing procedures.
CLEAN UP:
Cured polymers are most difficult to remove. It is best to clean tools and
equipment immediately after use.
STORAGE:
Polymer systems have a minimum shelf life of six months when unopened. Both
components should be stored in a room temperature dry place.
When not in use, containers should be kept tightly closed. (see Resealing)
RESEALING:
Many polymers are moisture sensitive, reseal, using one of the following two
(2) methods: blanket with nitrogen or use a hair dryer for 30 seconds to
cover with dry air.
PRECAUTIONS:
Skin or eye contact with polymers should be avoided. Clean housekeeping
procedures are urged and the use of gloves and/or protective creams
suggested. All polymers, as a general practice, should be used in
well-ventilated areas. Spot ventilation is most effective. Contaminated
clothing should be removed immediately and the skin washed with soap and
water or waterless skin cleaner. Should accidental eye contact occur, wash
thoroughly with water and consult a physician.
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