Design Tips
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Design Tips

 

Design Tips

 

Get quick advice on creating plastic, metal, and elastomeric parts for 3D printing, CNC machining, and injection molding. Designing with manufacturability in mind can accelerate production time and reduce production costs.

 

Adding Strength Insert Molding Multi-Cavity Molds
Bosses Knit Lines Multipart Assemblies
Cams and Side-Actions Lenses Overmolding
Channels Leveraging Low-Volume Molding Parting Lines
Clips Living Hinges Radii
Complex Parts LSR Molding Reducing Molding Costs
Core and Cavity Mating Parts Ribs
Cosmetic Defects Metal Safe Molds Shut-offs
Designing for Moldability Mistakes to Avoid When Designing Molded Parts Side-Actions
Draft Mold Modifications Surface Finish
Ejector Pins Mold Textures Text
Gates Molded Threads Undercuts: Fundamentals
  Wall Thickness Undercuts: Complexities

 


Undercuts

  • Tips Benefit
    To have a slot on undercut features

    1.simplify mold structure

    2.reduceing cost

    3.durable

  •  

 

Draft

  • VERTICAL FACES 0.5°
    MOST SITUATIONS
    MINIMUM FOR SHUT OFF

    MINIMUM FOR LIGHT TEXTURE (PM-T1)

    MINIMUM FOR LIGHT TEXTURE (PM-T2)

    5°+

  •  

Wall Thickness

  • MATERIAL RECOMMENDED WALL THICKNESS
    ABS

    1.143mm - 3.556mm

    Nylon

    0.762mm - 2.921mm

    PC

    1.016mm - 3.81mm

    PE

    0.762mm - 5.08mm

    PP

    0.635mm - 3.81mm

    PS

    0.889mm - 3.81mm

 


 

Overmolding Material Bonding

 

Chemical bonding between overmolded materials is possible, but material compatibility should be considered in order to achieve desired bond strength. Incorporation of an adequate mechanical bond is strongly recommended if bonding is critical to your application. An undercut is a good example of a mechanical bond

  Substrate Material
Overmold Material ABS Lustran ABS/PC CYCOLOY C2950-111 PC Lexan
940-701
PBT Valox
357-1001
PP Profax 6323
TPU - Texin
983-000000
C C C C M
TPV - Santoprene
101-87
M M M M C
TPC - Hytrel 3078 C C C C M
TPE-Versaflex OM
1060X-1
C C C M M

( M = mechanical bond (recommended)      C = chemical bond )

 

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