Preparation of Composite Specimen from Wet Resins

A matched metal mold must be carefully ground from hardened steel and the finished dimensions carefully checked. The mold, when new, should be coated with silicone grease and baked for 24 h at 200°C, to acquire a patina with an improved release. All assembly set screws and their sockets should be smeared with silicone grease to prevent resin penetration 

The number of tows required when making a 60% composite bar would be  

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