• Easy 1:1 mix, by weight or volume (1510 by weight only)
• Easy stirring, no hard settling
• Easy to machine, contains no silica
• Low odor formula
• Reproduces fine detail, air bubbles rise and break
• Long working time or instant set with Part X
• Durable, high hardness, non-brittle, low shrinkage formulas
• Castable in large masses

15 Series liquid plastics are helpful for manufacture of decorative objects, parts, lightweight mold shells, tools, models, patterns, fixtures, duplicate masters, vacuum forming molds and general tooling use. 15-6, 1510, 1512 and 1512X have the texture and density of wood or thermoplastics and 15-3 and 15-3X are more like stone. 15-8 is an aluminum-filled system for high heat-resistance applications such as vacuum forming where efficient thermal conductivity is required. 1512 Clear is practical for casting transparent components or for pigmenting/color casting. 1512 Clear may be used for cold cast bronze or other applications using dry fillers. Over time,1512 Clear will appear yellow. See the Optic products for applications requiring water-clear, non-yellowing plastics.

These products reproduce minute detail from a mold or pattern, but may stick or foam when poured on surfaces that are not adequately prepared. A trial casting should be executed on a similar surface before the final mold is made to avoid damaging a valuable mold. Polyethylene and silicone rubber molds, such as Tin Silicone and Platinum Silicone systems, do not require a release agent, but a barrier coat may be helpful. Latex, polyurethane rubber or metal molds have to be dry and necessitate a coat of a suitable release agent, such as Ease 2300 Release Agent. The 74 Series are well suited for limited casting in 15 Series products.

Part X is a strong catalyst that increases the speed of curing. A few drops in a one-pound mix speeds the cure profusely. Exotherm (heat of reaction) is increased, so shrinkage on cooling also increases. Use experimental results to determine the correct quantity of Part X to use. Never use more than 1% Part X of the total weight of the mix because it will affect the final physical properties. 15-3X and 1512X already have Part X added. Part F may be added to mixed 15-6 and 1510, (up to 3%) to produce foams with densities as low as 6 lbs. per cubic foot. Fiber may be added to thicken the mix to a paste consistency. Microballoons may be added to create a wood-like, lower density material. See LiteCast.

Before mixing, all molds and equipment must be prepared. Parts A and B should be above 60°F. Stir parts A and B thoroughly prior to use. Sediment may develop on the bottom of the container. Normally, moderate mixing to disperse the sediment before use is all that is required. The containers of Parts A and B should be used or resealed tightly after opening because atmospheric moisture contamination may instigate foaming of the plastic. Use metal or plastic mixing vessels and spatulas to avoid introducing moisture as may occur with paper or wood tools. Measure or weigh Parts A and B and place in a mixing container. Polyethylene buckets are superior and can often be reused. Add Part X or Part F after the components are weighed, if desired. Mix immediately and thoroughly scrape the sides and bottom for one minute. Pour mix into cavity as quickly as possible. If desired, Cab-O-Sil or Fiber can be added after Part A and B are mixed.

Cured 15 Series plastics should be painted for outdoor use because they will yellow and chalk when exposed to sunlight. They can be simply drilled, sanded and machined. Adhesion of the coating should be checked carefully over a period of time to determine that it is satisfactory for the intended use after painting or coating. Oil paints work adequately if detergent and/or solvent washing remove the mold release.

Tools should be scraped clean before the plastic hardens. Alcohol (shellac thinner), acetone or MEK are worthy cleaning solvents, but are highly flammable. To easily remove hardened resin, work surfaces should be waxed or coated with Ease 2300 Release Agent.

At least six months in unopened containers stored at room temperature (60-90°F).

See Methods of Use. Plastics are highly flammable. Sanding dust and other easily ignitable forms of these products should be handled with care.

Packaging:

Containers

Size

Net lbs.

Product

Weight/lbs.

A

B

A

B

15-3, 15-3X
Mix Ratio
1A to 1B

5

1 qt.

1 qt.

2.5

2.5

20

1 gal.

1 gal.

10.0

10.0

100

5 gal.

5 gal.

50.0

50.0

15-6, 1510, 1512, 1512X, 1512 Clear
Mix Ratio
1A to  1B

4

1 qt.

1 qt.

2.0

2.0

16

1 gal.

1 gal.

8.0

8.0

80

5 gal.

5 gal.

40.0

40.0

900

55 gal.

55 gal.

450.0

450.0

15-8
Mix Ratio
26A to 100B

3.2

1 pt.

1 qt.

0.7

2.5

12.1

1 qt.

1 gal.

2.5

9.6

48.5

1 gal.

5 gal.

10.0

38.5

Part 15X Catalyst: 1 oz., 1 pt. (1.0 lb.), 1 gal. (8.0 lbs.), 5 gal.  (40.0 lbs.)
Part 15F Foamer: 1 oz., 1 pt. (1.0 lb.), 1 gal. (8.0  lbs.), 5 gal. (40.0 lbs.)
Bronze Powder: 2 lb. can, 10 lb. can, 110 lb. can
Fiber: 2 lb. bag
Ease 2300 Release Agent: 12 oz. can, Case of 12 cans