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

Fillets and Radii

Fillets and radii are generally advantageous to product function as they reduce stresses at the intersection of features. They are also advantageous to the molding process, by eliminating sharp corners that can cause cracking or erosion of mold features, by facilitating the flow of feedstock into the mold, and by assisting in the ejection of the part from the cavity. They may also provide a softening of sharp corners for esthetics and handling. Fillets and radii of 0.4–0.8 mm (0.015–0.030 in.) are generally preferred.