Smooth-On Smooth-Cast 300 Series of liquid plastics are ultra-low viscosity casting resins that yield castings that are bright white and virtually bubble free. Vacuum degassing is not necessary. They offer the convenience of a 1A:1B by volume or 100A:90B by weight mix ratio.Fully cured castings are tough, durable, machinable and paintable. They resist moisture and mild solvents. Applications for Smooth-Cast® 300 Series Liquid Plastics include reproducing small to medium size sculptures, making prototype models, special effect props and decorative jewelry.
Features:Low viscosity - captures excellent detail - no degassing necessaryEasy to measure and mix - 1:1 mix ratio by volume - no scale requiredShore Hardness - 70D
Products:Smooth-Cast 300Q - Pot Life 30 secs / Demold 5 mins Smooth-Cast 300 - Pot Life 3 mins / Demold 10 minsSmooth-Cast 305 - Pot Life 7 mins / Demold 30 mins Smooth-Cast 310 - Pot Life 20 mins / Demold 4 hours
Note: These resins readily accept fillers (such as URE-FIL® 3 ) and can be colored with SO-Strong® or Ignite® color tints but the Smooth-Cast 325 Color Match series accepts them better.
Applying A Release Agent - A release agent is necessary to facilitate demolding when casting into or over most surfaces. Use a release agent made specifically for mold making (Universal® Mold Release or Mann’s Ease Release® 200 available from Smooth-On or your Smooth-On distributor). A liberal coat of release agent should be applied onto all surfaces that will contact the plastic.