So I've been drilling standard 1/4" aluminium in a small (250W) consumer drill press. I've used a little oil to help, but I'm not sure if I'm doing it right. The holes seem okay though. They're 10mm diameter.
Judging by the swarf coming off the bit, am I doing it right or is there room for improvement? The edges of the swarf seem 'ripped' with little tags visible. And one side is dull, the other polished.