IN & OUT® II water soluble release agent will aid in releasing concrete or gypsum plaster castings from Smooth-On rubber molds. IN & OUT® II provides a clean, positive release and does not interfere with or affect surface detail and helps minimize air bubbles in finished castings.
Technical bulletin In & Out water soluble release
IN & OUT® II IS DILUTED WITH WATER.
Measuring & Mixing - Mix 4 parts water to 1 part In & Out II. Mixing can be done by hand or slow speed mixer. Do not shake or agitate as this may cause product to foam.
How you dilute IN & OUT II® (amount mixed with water, coverage and frequency of application) will depend on the concrete aggregate mix and the form material you are casting into. For example, when casting concrete with a low grit/high sand content (minimal abrasion) into a polyurethane mold, the mix ratio of water to IN & OUT II® can be 4 : 1. High grit content may call for a dilution ratio of 2 parts water to 1 part release agent.
Mix only amount needed for one day. Mixture may separate after 24 hours. Re-mix to a uniform consistency and apply.
Application - Apply IN & OUT® II thoroughly with brush, roller or spray. If pressure spraying, pressure should be 25 psi (172 kPa) or higher. For uniform spray applications of release agent, flat spray tips are suggested. Do not allow release agent to puddle.
Caution: Do Not Over Apply. Applying too much release agent will cause air bubbles “wormtracks”, “bugholes” or pitting on surfaces.
Because no two applications are quite the same, a small test application to determine suitability for your project is recommended if performance of this material is in question.
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