This video segment will show you how to make a simple two-part mold using Urethane RTV molding rubber. This and many other molding and casting products are available at https://www.tapplastics.com/product/mold_making_materials/mold_making_supplies
To order TAP Urethane RTV, go to: https://www.tapplastics.com/product/mold_making_materials/mold_making_supplies/tap_urethane_rtv_mold_making_system/63
To order Jolly King Modeling Clay, go to: https://www.tapplastics.com/product/mold_making_materials/sculpting_materials/jolly_king_modeling_clay/111
To order Pol-Ease Mold Release, go to: https://www.tapplastics.com/product/mold_making_materials/mold_making_supplies/pol_ease_2300_mold_release/66