MIM

What Is MIM?
   Process Overview
When to Use MIM
   General Guidelines
   Technology Comparisons
   Materials Range
   Materials List
Design Guidelines
   Designing for Manufacturability
   Uniform Wall Thickness
   Thickness Transition
   Coring Holes
   Draft
   Ribs and Webs
   Fillets and Radii
   Threads
   Holes and Slots
   Undercuts
   Gating
   Parting Lines
   Decorative Features
   Sintering Support
Secondary Operations

Draft

Draft is the small angle on surfaces that would otherwise be parallel to the direction of movement of mold members. This is particularly true for core pins. Draft is provided to facilitate the release and ejection of the molded form. The normal range is 0.5° to 2.0°. The actual amount of draft increases with the depth of the hole or recess being formed, as well as with the complexity of the component or addition of multiple cores. Figure 4 illustrates some of the circumstances that require draft.