I am thinking of buying a fly cutter to use on Aluminium but I'm in two minds

is it better for the spindle to use a larger two flute cutter

say a 30mm cutter as this is better balanced

I would assume a fly cutter will generate a lot of unbalanced force on the spindle bearing
and with a standard 2.2kw VDF the spindle would be spinning far to fast.

I would like your views and comments on this before I buy a new cutter

also advice on a new spindle collet nut

I currently have a nut that came with the spindle but I want to buy a spare one or two

But I can't find any that are balanced

are these any good if not would you please point me in the right direction please

http://www.ebay.co.uk/itm/3x-ER20-Ty...ht_2108wt_1163

James and Luke :feedback: