Wire brushing

I've got a wire brush attachment for my grinder, and works great, paint almost evaporates off!

Question is;  Is this ok to use on the exterior bodywork?  i.e is it a bit too harsh?

Just worried that I'll bare metal the car and then realise the prep is harder because I should have used something else.  does it leave tiny scratches?

p.s I'm primering the bare metal immediately after brushing.

Thanks.

hmm, quite vicious aren't they, I normally only use them on rust, would,nt really like to offer advice, so pointless post I suppose, but I will make it anyway.

I'd say they were a bit harsh for that, you can get the sanding disks for angle grinders though, which are kinder but still rip through the paint.

This sort of thing:
http://www.builderdepot.co.uk/bosch-sanding-flap-disc-for-angle-grinders-s-steel-115x22mm-g60.html?gclid=CjwKEAjws5CrBRD8ze702_2dyjYSJAAAJK9yOb5ufN6d2TdypAOkazPidc5rWd_roRyDq76vENqvDBoC0bHw_wcB

Thanks both, I had kind of decided it was a bit harsh, but nothing like getting confirmation!

I'll get some flap discs for the outer bodywork I want mint, underneath I'll be using the wire wheel!

woh! hold up buddy !
Do not use flap wheels ! every spark you see coming off the wheel is good steel! they are absolutely no good for this kind of work, trust me ive been doing this sort of work a long time  
they are way too harsh, normally used for cleaning welds up etc!
a wire brush would be a much better alternative than a flap wheel.
Stripping discs or mule skinners are a good way forward  

Poly discs are great!

http://www.ebay.co.uk/itm/CAR-BODY-WORK-FIBRE-POLY-DISC-PAINT-115MM-41-2-RUST-SANDING-DISCS-WHEEL-EMK11-/301202378123?pt=LH_DefaultDomain_3&hash=item46210f8d8b

They'll remove the paint, muck and crud - plus take away most of surface rust but wont strip away all your steel. They wear out quick but are the best thing I've used to date for cleaning up bodywork.