Axle Preparation Study – Filed and Sanded Axle

This axle was dressed with an ordinary metal file in order to remove burrs and crimp marks.  Under the microscope, the file itself looks like this:





After filing, the axle looked like this:



After filing, wet sanding at grits of 320, 400, P600, P800, 1000, 1500, and 2000 was applied.  After each grade of sanding, a cotton cloth was used to clean the slurry from the axle.  The following are images after each sanding step.
320 grit


400 grit


P600 grit


P800 grit


1000 grit


1500 grit


2000 grit