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 Silic...  

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