Great Video: Casting a Part With Polyurethane | Part 2 скачать в хорошем качестве

Great Video: Casting a Part With Polyurethane | Part 2

Welcome to Part 2 of BJB's Mold and Part Making Video Series! Using simple methods developed over decades in Casting, Rapid Prototyping, Movies, DIY & much more... learn how to cast high quality Polyurethane parts in the silicone mold made in Part 1 of this series. BJB is the industry's preferred resource for "Taking the Mystery Out of Materials". Part 1 Video here:    • Great Video: How to make 2-Part Silicone M...   Company Website - http://www.bjbenterprises.com/ Phone - 714-734-8450 (USA) 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. http://www.bjbenterprises.com/ 0:00 Introduction 1:56 Exothermic Reacts/heats faster with increased mass. 2:12 Temperature Affects Work-Time 2:45 High Viscosity = Thick 2:50 Viscosity Centipoise (CPS) 5:22 "Paintable" Mold Release 5:25 E302 Rocket Release 5:49 Silicone Oils can transfer to the part. 6:00 Mold Release can Limpart a texture. 6:16 E236 Urethane Release 6:23 Don't flood the surface! 6:31 Don't spray release in casting area! 6:41 Allow a few minutes before closing mold. 6:59 The mold is clamped between two boards to close seam line. 7:51 Vent Risers & Fill Funnel create reservoirs to account for material shrinkage. 8:31 Rolled Funnel 8:45 Smaller Cross Section • Increased Head Pressure 8:54 Paper can cause moisture contamination! 9:24 Dispense Equipment 10:12 9-Min Work Time 1000 CPS 11:07 2% X 100g = 2g 6821 Cherry Red Pigment 11:15 Don't mix 3 components together at once! 12:04 Double Mixing 14:04 Heat promotes quicker demold 14:29 Pressure does not force air out of the mold. 14:43 40-80 psi common pressures