I am in the process of setting up my CNC mill. I have a Kress 1050 spindle. I have 2 collets for it - 8mm and 1/4 inch.

I am looking at buying a set of milling bits - rough cutting bits and finishing bits. (I have not learnt all the terminology yet)

Is it possible to find a set of bits ranging from M2 or M3 up to something like M12 that will fit into the collets that I have? I don't want to have to buy a collet for each sized bit if I can help it to save on costs.

So what I am asking is where I could find a set of affordable milling cutters that share the same shank size?

Thanks
Jack