I have a Sieg sx2 Mill and was Thinking about an Index head face cutter Now its an R8 fitting and have found a 50mm version I think its Like a Shell mill possibly, but don't quote me ! Now heres the thing..I just would like to skim pass Steel and ali etc. to clean up and make faces square and presentable....so its 50mm diameter is that tooo big for this mill and abilities or is it just super slow and min depth cut ?