I need basics concepts for GD&T

I have to learn the basic things about GD&T concepts.PLease helpme someone

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There are a few good sites online that offer training and good examples:
- http://www.gdandtbasics.com is a good site that offers a lot of really in depth articles describing the GD&T symbols. It is still fairly new but looks promising.
- http://www.engineersedge.com also covers a lot of the GD&T terms and appears to have quite an extensive list of all of the symbols.
- http://www.eng-tips.com/ is a great place to ask a lot of professionals about specific questions you have. Searching their forum, you can find just about anything.
There are also a lot of courses out there but they can be quite expensive (like $500 or so) I would check out the free sources above for information.

 
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For GD&T basics you need to understand some typical situations.
those are called Feature of sizes. those are somewhat tricky but must and should for the GD&T basics.
Those are
Maximum material condition: http://extrudesign.com/maximum-material-condition/
Least Material Condition: http://extrudesign.com/least-material-condition/
Regardless of feature size: http://extrudesign.com/regardless-of-feature-size/

 
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I am a graduate in mechanical department am working in production field as GAT but am very much interested in design field I did some design courses AutoCad,Creo,Ansys,diploma in Piping and NDT what I do for my design career anyone give some suggestions is this courses enough or I'll do any extra courses

 
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