Somebody posted this question on another forum and friendly TA Juggalo Muli recorded a mix to demonstrate this trick. I think it's the same thing you are talking about......
Registered: May 2003
Location: LATA #72 (Sunny SoCal)
Cool link... helps a lot to listen to what you guys are talking about.
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Desktop DJ Ordinaire "Where words cannot express, music does"
May-26-2005 18:51
Nemesis44
ZZZZZzzzzzz.....
Registered: Aug 2003
Location: Brighton
Hardly what I call being on the cutting edge of skills and effects.
This is just a quick stab with the fader nothing more. It would be ironic if this is what the original poster was refering to as people (myself included) have gone and given some quite involved answers describing various techniques. All of which I have to say kick this one in the nuts in terms skill and overall effect.
The effect in the sample isn't a scratch though. There is no movement of the platter.