Injection Moulding - Bump Offs

Bump-offs are a clever technique we use when we want to create a part with some kind of undercut, but still want the simplicity of a straight-pull mould. Under normal circumstances these undercuts would catch on the mould when you were ejecting it.

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Undercut solutions in injection molding

Injection Moulding - Bump Offs - What Are They & How To Use Them

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The Design Guideline for Injection Molding - FacFox Docs

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Undercut Injection Molding: Achieve Undercuts in Injection Molding

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Design Tip: Create Complex Undercuts with Bumpoffs

Undercut Injection Molding: Achieve Undercuts in Injection Molding