I am doing a lot of cutting out of shapes.
I am at present using a 12mm bit. I was thinking that a 6mm bit would be better suited for cut outs since it doesnt have to remove as much material as a 12 mm bit. Is this theory right?
Also, can I increase the feed rate because the smaller bit doesnt have to do as much work?
Is an even smaller bit even better? What is the cut off point between increasing cutting efficiency, versus a bit that will wear out much quicker?
Edit: I was thinking that a 6mm bit would have the same cutting surface area as a 12 mm bit and would spin the same too. That is why it should cut faster. Is my thinking right?
Is a 4 blade cutter even better? If so why dont they make them as standard? Is it just a case of economics or is there other reasons for 2 blade cutters