Release agent – A compound, which is sprayed on the mould, or as an additive, molded into the part to help facilitate the discharge of the part. Parting line – A line on a component fashioned when the two sides of the mould come together. Mold launch – soucolor gel pens A floor preparation used to aid within the ejection of the part from the mould. Hardness – The resistance of a cloth to compression, indentation and scratching. Draft – The angle or degree of taper in a aspect wall to help facilitate removal of the elements from the mould.