What's a typical cutting speed for (assumed) mild steel, using an HSS tool?
I've got some steel van wheels on which I need to put chamfers on the holes. I've got a 90 degree 6-flute cutter, but I'm wondering what speed I can run it. The drill which will be easiest to use only goes down to about 450rpm. To use the big drill (which will run slower) I have to do the work with the tyres off, which makes it more hassle.
I don't know that they're mild steel, mark you. But I doubt they're anything exotic.