http://www.welduk.com/Details.asp?ProductID=191

I've been using those but in 1.2mm thickness,they are superb and leave the steel with no or little fileing to clean up.

I manages to cut through some 25mm box chassis steel with no force/pressure,just the weight of the 4.5" angle grinder was enough,went like a knife through butter

i buy these 1.2mm discs (german ones) by the box of 10 for about £12 from a local tool shop. they do go through very quick, but don't last very long especially if trying to cut 3mm plate!

Ned.

I have been using 0,8mm discs they are wonderful.. (made by Würth)

0.8mm? wow, that's thin. I wouldn't want to try using that without a grinder stand, I imagine in my ham-fistsed torquing hold they'd explode all over the place.

Justa quick note, I ordered these disc at 4 pm last night and they arrived this morning. Now that is service!!.
Discs look great!