You definitely need the work station, if you do buy one watch these videos or search YouTube 'PS3 Reball'
This guy says pretty much what you need
https://www.youtube.com/watch?v=_Hld...I&feature=plcp
Then watch his other videos of him doing it.
https://www.youtube.com/user/FixMyGPU/videos?view=0
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Lord, grant me the serenity to accept the things I cannot change, the courage to change the things I can, and the wisdom to hide the bodies.