I'm sure someone has had the same problems as me, so i was hoping someone could give me some insight....

We are making some parts out of ground bar stock that the customer supplied, and it's already ground to the size they want on the OD. However, my citizen b12 keeps scratching up their stock (they want to keep the 16 finish....). we got a special guide bushing that supposedly is soft enough to keep from scratching up the 303, but i haven't noticed an appreciable difference. I've loosened up the GB enough that the stock slides out during re-chucking and makes the part too long, and there are still scratches :angry:

Is there any tricks anyone uses to keep the OD looking nice and pretty?? I thought about making my own guide bushing out of brass or bronze, but that's a bit of a project, and i'm busy enough. I know i could always get stock a bit bigger and just turn it down (I'd RATHER do it this way, actually), but is there any way to use the customer's material??
thanks!!