I'm having to deal with a difficult person -- a mold maker favorite of my client who likes to make me jump hoops to please him. (Actually he's not such a favorite any more, because our common client now understands how difficult he's being.) He's telling me something that might be accurate, and might just be his way to make life difficult for me. Basically his story is that when metal is passing metal in a core/cavity that they need 10 degrees draft between the two surfaces, otherwise there is a high degree of danger that the mold will lock up at some point. I've got no special difficulty believing him, on the one hand, but I'm suspicious. I wouldn't have thought quite that much draft would be necessary. I'm going to have to do some thinking about how to accomplish it in the particular application I have. You can see the area of the part by going to:
TIA Mark 'Sporky' Stapleton Watermark Design, LLC