Honing tube is made by a high-precision grinding process, which is not only used for round holes, but also for hardened tooth surfaces. It can be used as a combined grinding tool and can be installed in a floating fixture, making it self-adjusting. Therefore, the shape error of the hole can be reduced, but the geometric error of the hole cannot be reduced.
Polishing tube is the use of soft polishing wheels or disc-shaped polishing discs, plus polishing paste, so that the workpiece is processed to obtain a high surface finish. However, since there is no rigid reference during processing, geometric errors cannot be reduced. However, compared to honing tubes, it can polish irregular surfaces.