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Mold StarŪ 15 Demo: Easy Use, High Tear Strength Platinum Silicone
Mold Star® 15 is perfect for experienced mold makers or people just starting out. It is an easy to use silicone rubber that offers performance other mold making rubbers do not:
  1. Easy To Use – the mix ratio is 1A:1B by volume…no weighing scale necessary.
  2. No Vacuum Degassing Necessary – Unlike other platinum silicones, Mold Star® de-airs itself resulting in bubble-free molds.
  3. Long Working Time – Pot life is 50 minutes at room temperature, offering time to make molds of large models.
  4. Mold Star® offers high tear strength and other great performance properties.
  5. Mold Star® offers minimal long term shrinkage.
  6. Mold Star® offers a very long library life of many years.
Fully cured rubber can be used to cast low-temperature melt metal alloys, urethane, epoxy or polyester resins, wax, plasters or concrete.

Important: Mold Star® 15 cannot be used with modeling clays containing sulfur. Even if the model is sealed.
 
 The Beginners Platinum Silicone - Mold StarŪ 15 is a Shore 15A platinum silicone that is mixed 1A:1B by volume; no weighing scale necessary. The original model is a stone sculpture that should be prepared prior to applying mold rubber.

1 - The Beginners Platinum Silicone - Mold StarŪ 15 is a Shore 15A platinum silicone that is mixed 1A:1B by volume; no weighing scale necessary. The original model is a stone sculpture that should be prepared prior to applying mold rubber.
 Hot glue is used to secure the model to the base of the mold box.

2 - Hot glue is used to secure the model to the base of the mold box.
 The model is pressed firmly to the base of the mold box and the hot glue is allowed to dry fully.

3 - The model is pressed firmly to the base of the mold box and the hot glue is allowed to dry fully.
 The original model is made of stone and is porous. It should first be sealed prior to applying mold rubber. SuperSealŪ is a low-viscosity sealing agent that can be brushed onto the surface without affecting detail.

4 - The original model is made of stone and is porous. It should first be sealed prior to applying mold rubber. SuperSealŪ is a low-viscosity sealing agent that can be brushed onto the surface without affecting detail.
 SuperSealŪ is applied to the original stone model.

5 - SuperSealŪ is applied to the original stone model.
 Depending on the porosity of the original model, multiple coats of SuperSealŪ may be necessary.

6 - Depending on the porosity of the original model, multiple coats of SuperSealŪ may be necessary.
 Once SuperSealŪ has been applied to the entire model, it is allowed to dry for 5 minutes.

7 - Once SuperSealŪ has been applied to the entire model, it is allowed to dry for 5 minutes.
 Optional: Ease ReleaseŪ 200 is applied over the original model to aid in demolding.

8 - Optional: Ease ReleaseŪ 200 is applied over the original model to aid in demolding.
 The four walls of the mold box are assembled around the model. They are held in place by a mold strap until hot glue can be applied to all seams.

9 - The four walls of the mold box are assembled around the model. They are held in place by a mold strap until hot glue can be applied to all seams.
 Hot glue is applied to all seams of the mold box. It is important that the box is completely airtight to prevent any leaks.

10 - Hot glue is applied to all seams of the mold box. It is important that the box is completely airtight to prevent any leaks.
 With the model prepped and the mold box fully assembled, Mold StarŪ 15 can now be poured over the model.

11 - With the model prepped and the mold box fully assembled, Mold StarŪ 15 can now be poured over the model.
 A partial gallon kit of Mold StarŪ 15 will be used for the mold.

12 - A partial gallon kit of Mold StarŪ 15 will be used for the mold.
 Part A is dispensed into a measuring bucket.

13 - Part A is dispensed into a measuring bucket.
 An equal amount of Part B is dispensed into a separate measuring bucket.

14 - An equal amount of Part B is dispensed into a separate measuring bucket.
 With equal amounts of Parts A and B dispensed, the Mold StarŪ 15 can now be combined.

15 - With equal amounts of Parts A and B dispensed, the Mold StarŪ 15 can now be combined.
 Part A is dispensed into a mixing bucket.

16 - Part A is dispensed into a mixing bucket.
 Part B is added to the mixing bucket with the Part A.

17 - Part B is added to the mixing bucket with the Part A.
 The two components are mixed by hand. Care is also taken to scrape the sides and bottom of the mixing container.

18 - The two components are mixed by hand. Care is also taken to scrape the sides and bottom of the mixing container.
 As the two components are mixed, the colors of Part A (white) and Part B (green) will combine to a solid light green.

19 - As the two components are mixed, the colors of Part A (white) and Part B (green) will combine to a solid light green.
 To ensure a thorough mixture, the contents are transferred into a second, clean mixing bucket.

20 - To ensure a thorough mixture, the contents are transferred into a second, clean mixing bucket.
 The two components are mixed until the color is uniform with no white or green streaks present.

21 - The two components are mixed until the color is uniform with no white or green streaks present.
 Because Mold StarŪ 15 is low viscosity compared to other platinum silicones, vacuum degassing is not necessary. The mixture is poured slowly in the corner of the mold box.

22 - Because Mold StarŪ 15 is low viscosity compared to other platinum silicones, vacuum degassing is not necessary. The mixture is poured slowly in the corner of the mold box.
 The Mold StarŪ is poured slowly in the corner of the mold box. The material is allowed to seek its own level over the model. This helps eliminate the potential for entrapped air.

23 - The Mold StarŪ is poured slowly in the corner of the mold box. The material is allowed to seek its own level over the model. This helps eliminate the potential for entrapped air.
 Mold StarŪ 15 has a long (45 minute) working time. Not only does this help eliminate bubble entrapment, it also allows the material to be poured slowly or over a large area. Once poured, allow Mold StarŪ 15 to cure for 4 hours before demolding.

24 - Mold StarŪ 15 has a long (45 minute) working time. Not only does this help eliminate bubble entrapment, it also allows the material to be poured slowly or over a large area. Once poured, allow Mold StarŪ 15 to cure for 4 hours before demolding.
 Once Mold StarŪ 15 has cured for 4 hours, the mold box can be carefully disassembled.

25 - Once Mold StarŪ 15 has cured for 4 hours, the mold box can be carefully disassembled.
 The mold is flipped upside down and the bottom of the mold box is removed.

26 - The mold is flipped upside down and the bottom of the mold box is removed.
 Flashing is trimmed from the edges of the mold and the opening of the mold cavity.

27 - Flashing is trimmed from the edges of the mold and the opening of the mold cavity.
 To remove the original model, a seam is cut down the back of the mold. Mold StarŪ 15 has great tear strength, allowing the mold to be stretched a great deal without tearing.

28 - To remove the original model, a seam is cut down the back of the mold. Mold StarŪ 15 has great tear strength, allowing the mold to be stretched a great deal without tearing.
 The seam is cut down the back of the mold until the original piece can be easily removed.

29 - The seam is cut down the back of the mold until the original piece can be easily removed.
 The original model is removed from the mold. The Mold StarŪ rubber captured perfect detail from the original model.

30 - The original model is removed from the mold. The Mold StarŪ rubber captured perfect detail from the original model.
 The mold is ready for casting.

31 - The mold is ready for casting.
 Smooth-CastŪ ONYX will be poured into the mold.

32 - Smooth-CastŪ ONYX will be poured into the mold.
 For a metallic effect, Cast MagicŪ Bronzonker powder will be applied to the mold surface first.

33 - For a metallic effect, Cast MagicŪ Bronzonker powder will be applied to the mold surface first.
 A light layer of Bronzonker is brushed onto the surface of the mold.

34 - A light layer of Bronzonker is brushed onto the surface of the mold.
 Once the Bronzonker is applied to the entire surface, any excess is blown off with compressed air.

35 - Once the Bronzonker is applied to the entire surface, any excess is blown off with compressed air.
 A mold strap is used to keep the mold tightly closed while casting resin.

36 - A mold strap is used to keep the mold tightly closed while casting resin.
 Part A of Smooth-CastŪ ONYX is shaken prior to dispensing.

37 - Part A of Smooth-CastŪ ONYX is shaken prior to dispensing.
 Part B of Smooth-CastŪ ONYX is shaken prior to dispensing.

38 - Part B of Smooth-CastŪ ONYX is shaken prior to dispensing.
 Part A is dispensed into a measuring cup.

39 - Part A is dispensed into a measuring cup.
 An equal amount of Part B is dispensed into a separate measuring cup.

40 - An equal amount of Part B is dispensed into a separate measuring cup.
 Smooth-CastŪ ONYX is mixed 1A:1B by volume.

41 - Smooth-CastŪ ONYX is mixed 1A:1B by volume.
 Part A is added to a mixing bucket.

42 - Part A is added to a mixing bucket.
 Part B is added to the same mixing bucket.

43 - Part B is added to the same mixing bucket.
 Parts A and B are mixed thoroughly. Care is taken to scrape the sides and bottom of the mixing bucket.

44 - Parts A and B are mixed thoroughly. Care is taken to scrape the sides and bottom of the mixing bucket.
 The Smooth-CastŪ ONYX is poured into the mold.

45 - The Smooth-CastŪ ONYX is poured into the mold.
 Smooth-CastŪ ONYX is allowed to cure for 15 minutes prior to demolding.

46 - Smooth-CastŪ ONYX is allowed to cure for 15 minutes prior to demolding.
 The casting is demolded. The Cast MagicŪ Bronzonker transfers to the casting surface, producing an inexpensive metallic effect.

47 - The casting is demolded. The Cast MagicŪ Bronzonker transfers to the casting surface, producing an inexpensive metallic effect.
 The original stone model (left) is shown with the Mold StarŪ 15 mold (center) and the Smooth-CastŪ ONYX casting (right). A perfect copy!

48 - The original stone model (left) is shown with the Mold StarŪ 15 mold (center) and the Smooth-CastŪ ONYX casting (right). A perfect copy!

                   
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