Please use a vacuum because the cast iron dust is very harmful to your lungs, and your machine. It also takes a long time to clean it up because it goes everywhere
I hope you don’t plan on using that rotor on an actual vehicle. It will probably be out of spec for runout and parallelism. You indicated off the wrong surface then machined the flange to the disc plane. No guarantee that the wheel studs holes are 90 degrees to the rotor. Then you did not machine the outer surface of the flange. If the inner and outer flanges are not parallel you will induce excessive pedal vibration during braking. A disc brake rotor should be turned on the vehicle with a specialized piece of equipment to keep runout close to zero because it will be machined on its natural axis.
You mounted the rotor on a cast non-machined surface. You then indicated on a worn brake surface. You may have machined each side parallel to the other but your axis is the lathe and not vehicle spindle axis. Today’s OEMs specify on-car brake lathes to keep the runout near zero.
Please use a vacuum because the cast iron dust is very harmful to your lungs, and your machine. It also takes a long time to clean it up because it goes everywhere
Absolutely right, dust is very bad for your health and for the guides of the machine, so I try to do such work very rarely
I hope you don’t plan on using that rotor on an actual vehicle. It will probably be out of spec for runout and parallelism. You indicated off the wrong surface then machined the flange to the disc plane. No guarantee that the wheel studs holes are 90 degrees to the rotor. Then you did not machine the outer surface of the flange. If the inner and outer flanges are not parallel you will induce excessive pedal vibration during braking. A disc brake rotor should be turned on the vehicle with a specialized piece of equipment to keep runout close to zero because it will be machined on its natural axis.
Of course I'm planning to use this disk on a car as all working surfaces were turned in one setup and parallelism is zero. So there is no runout
You mounted the rotor on a cast non-machined surface. You then indicated on a worn brake surface. You may have machined each side parallel to the other but your axis is the lathe and not vehicle spindle axis. Today’s OEMs specify on-car brake lathes to keep the runout near zero.