Great Video How to make 2Part Silicone Mold Part 1

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=iRj6xzNx7P4

Link to PART 2 - Casting the Urethane Part: • Great Video: Casting a Part With Poly... • Making a 2-Part silicone mold is an essential skill to learn for casting polyurethanes. Using simple methods developed over several decades in Rapid Prototyping, learn how to make a silicone mold that produces high quality parts. • For 40 years, BJB Enterprises, Inc., an ISO 9001:2008 Company, has been in the business of formulating and supplying quality liquid resin systems to a vast array of industries and with a myriad of applications in mind! • BJB offers a complete line-up of Castable Polyurethanes, Epoxy Systems, Silicone Casting Rubbers, Polyurethane Foam Systems, Aliphatic Water Clear Urethanes, Sprayable Polyurethanes, Pigments and Release. • Be sure to visit our website: • www.BJBEnterprises.com • 0:00 Introduction • 0:47 Rigid Plastics • 0:52 Rigid Flexible Foams • 1:08 Two Part Silicone Mold • 1:55 Primed and painted with clear auto paint. • 3:25 Double-Sided Tape • 4:28 Cut Thin Strips of Tape • 4:33 Apply Thin Perimeter • 4:39 Measure Mark Master • 4:49 Peel Off Backing Place On Splitter • 5:10 Fill with Modeling Clay trim with Shaping Tool • 5:46 Feathered Edge • 6:04 Demold clean part simulating an injection molded part • 6:17 Styrene Sheet • 6:32 Fasten with glue or tape • 6:51 Pre-Molded Keys • 7:57 Building Blocks • 8:02 Large Diameter Pipe • 8:14 Silicone can form a mechanical lock on rough surfaces • 8:22 ABS Plastic Sheet • 8:50 Making walls too thin can cause distortion • 9:02 Mold box with clamps incorporated • 9:11 Hot Glue to Splitter Board • 9:37 Tin Catalyzed (condensation cured) • 10:12 Sulphur Containing Clays • 10:27 Run Small Test on Unknown Surfaces • 12:25 Use a mixing container with plenty of room for expansion. • 13:14 Continue pulling vacuum for several minutes. • 14:39 Aerosol Spray creates a texture • 15:38 Plastic Rod • 15:53 Provide Make-Up material from shrinkage. • 16:24 Vent Risers • 16:51 Risers decrease wear on the mold • 17:14 Equipment Injection • 17:32 Placement of fill port vents is a critical detail.

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