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Re: Sanding brake discs
Just watched it too. Its not too disimilar to a machine that a small independent tyre & exhaust garage I use to use some 20 years ago had. From what I can remember it had a powered drive to rotate the disc but used some kind of grinding disc instead of the lathe tool and each disc would be left grinding for about 20-30 mins each disc.
This service wasn't expensive and was used on all makes such as my 'bread & butter 86 Ford Sierra and not just for performance cars.
I guess this kind of service has faded out with the trend for garages wanting only to fit new components rather than try and fettle existing parts into better shape.
Currently in Renoir White's garage:
Renault Trafic 1.7 Petrol Vauxhall Astra 1.4i & in bits Triumph Bonneville T140E & H-D XLH1200