No, that's not what I meant. 2.5mm IS for fine finishing (although I referred specifically to de-nibbing, I didn't mean that was all it was good for). If that's all you want it for, then 2.5mm is the way to go. But I wanted something which was capable of taking off that bit more a bit quicker, which was why I went for the 5mm orbit. Even so, it still leaves an excellent finish.Scrums":158rxvbs said:So .... you reckon the 2.5 is too fine for finishing Oak ? - :? that was what I was going to plump for.