Originally Posted by
MoAlpha
Oh, lying on your back? Angle grinder? At least it's fast. Protect your eyes.
I will certainly protect eyes. Would wonder if a carbide-tip drill bit would work. I already have an electric drill. I don't have an angle grinder. I didn't buy/try the split flanges yet so am hoping they are wide enough to render the problem moot....but that old rusty flange looks mighty wide.