From the course: SOLIDWORKS: Mold Design

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Mold complexity, pulls, and placement

Mold complexity, pulls, and placement - SOLIDWORKS Tutorial

From the course: SOLIDWORKS: Mold Design

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Mold complexity, pulls, and placement

I know I've warned you away from undercuts, and explained why they won't work in a standard bivalve mold, but what if your design absolutely requires it? Many parts require additional moving pieces as parts of the mold, which adds cost for every additional pull. They go by a few names; side actions, cams, and side pulls. I like to call them pulls, because they are pieces of the mold that hold in place during injection and pull away so you can eject the entire part. They pull perpendicular to the face they're pulling away from, but they also need their own draft in relation to that face. The pull is like a tiny simplified mold for specific features on your part. It needs a draft in relation to the direction it's being pulled. Usually, pulls leave a mark, so if that bothers you, try to incorporate the shape of your pull into your design. The part end of the pull should match the curvature of your part, even on a part with drafted walls like this. Pulls enable you to have undercuts. Be…

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