This foam formulation is designed to make molded flexible foam parts/sheets/dies/blocks by hand-mixing with very basic tools such as a cup and stir stick. The components are low-viscosity stable liquid at room temperature. These properties are ideal in small scale productions for custom foam applications such as custom seating, padding, cushioning, many others. The free-rise density of the foam is 6 to 7 pounds per cubic foot. The cell structure is partially open-cell, and may be made to open-cell structure by physically crushing soon after foam is made. This is an MDI base water-blown polyether system, and it does not use auxiliary blowing agents Examples for Applications: Molded Upholstery Parts Custom Seating, Padding, and Cushioning Parts Custom Packaging of Impact/Vibration-Sensitive Items Prototyping Information provided by Northstar Polymers.