Excessive grease on moving components can end up in the mold cavity and result in problems including plugged vents. Frequently when a mold comes back from service it will be “over-greased” as mold shops will have a tendency to go with the approach of if a little grease is good a lot is better. Work with your tool shops to establish guidelines for the appropriate amount of grease to be used on a mold. Also, anyone in your shop who applies grease to a mold should be familiar with proper application of grease on mold components.