All design features MASTER of the mold opening

The coring of MASTER rattan sofa mold is easy when the axis is parallel to the parting line. But when holes and other features run perpendicular to the parting line then retractable cores (or cams) are required. Split pins and cores (called passing steel shutoffs) can be used to create some of the features. The designer needs to be aware of the problems of side action cores and the added expenses associated with these types of MASTER plastic injection mould. With a little understanding of how the mold opens and where the parting line will exist, these costly features can be modified. Rule of thumb: whenever possible all design features should be incorporated in the same direction of the mold opening so that cam action can be avoided.