As a Manager/Project Manager, what defect prevention techniques you recommend that worked for you?

I did not findany defects

i just incorporate myself with the plans,

By:

1- Perfect Planning

2- Perfect Feedback

primarily Risk Management 

just get into it with implementation spirit.

The prevention technique created by well designed quality system to expect what defects might appear during the project and put the defense lines against.

Prevention of defect is different from correction of current defect.

It is a prophylactic technique.

Integrating quality assurance and handling within the different business processes rather than having it as a standalone business process.

Fast action towars the problem even it was small.

integrate the qualty insurance process with every businuss process.

We tend to under estimate the value of human resources and it remains neglected. Take the team together with due importance to their potential and availability to meet the set goal.

The best Technique for me is dig into the details as early as possible, to see where the critical details have effect on the complete schedule and costs.