Originally Posted by
AndrewLewis
That will take you an obscene amount of time. Measure the diameter of your barbell sleeve, take the plates to a machine shop, tell them you need the hole opened up and it doesn't need to be concentric or perfect. They'll throw it on a lathe and take the face of the inner diameter off in five minutes. It doesn't even need to be bored out.
I just called Machine Shop of Charlotte at (704) 377-4716 and explained the situation. The owner is closing his shop and retiring, but he said if you call him and bring them in, he'd be happy to help you out. The sooner you call, the better.