Injection Molding Design Guide

Guide for high quality and cost-effective plastic injection molding.

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Wages, employment opportunities, and growth projections for STEM jobs.

CNC Machining Design Guide

Optimize your designs, reduce machining time, and lower your costs.

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Counter Bore/Sink
  • Counter-sinking is often done to accommodate heads of flat head screws. However as can be seen from the figure, there is a sideways component of the thrust which could split the countersink due to the generated hoop stresses
  • Counter-boring is done to accomodate pan-head, fillister-head or round-head screws or other screws with flat-bottomed undersides.

  • Counter-bored screws exert only force in the axial direction, thus operate mostly under compression, with no sideward component to the applied force vector. Such design is inherently more robust than counter-sinking.
Injection Molding Design Guide

Guide for high quality and cost-effective plastic injection molding.

Negotiate Your Salary

Learn the best principles to negotiate the salary you deserve!

STEM Career Outlook

Wages, employment opportunities, and growth projections for STEM jobs.

CNC Machining Design Guide

Optimize your designs, reduce machining time, and lower your costs.