Brake Rotor Refreshing tips?

[AirCooledFour]

I was wondering if its ok to sandblast used front brake rotors as long as I have plenty of material thickness left? Or is there another method to "refresh" or turn used rotors?

[67fire]

I did it myself on an Ammco Brake Lathe many years ago, it was quite a challenge! You have to install every sound deadening device that you can to the rotor while turning. The cutting bits, need to be new. It has to turn at the slowest speed possible and you have to stand right by it as it turns. The material is Surgical steel or something of very high quality. The material comes off as one very long ribbon of steel so, you MUST pull it away from the machine or it could rap around the hub and cause some damage. After several slow/shallow cuts, you then take a roloc pad on an angle grinder and create a non-directional finish.
Unless you have a friend with access to one of these machines, I doubt that anyone would do it for you.
You could see if a machine shop might be able to do it on a flywheel facing machine?
Hopefully, someone else on this site, has some other solution.

Eric

[Nessism]

Sandblasting the rotor to rough it up before installing new pads would be fine.

[rapidray]

While you CAN "turn" rotors to re-surface them, the correct way is to have the "blanchard" ground. Glass beading them would be better than sand blasting unless you use a very fine sand. Ray.