Hi Alia & all,
What we are talking about here is generically referred to as,
Surface Conditioning (SC). Simply put, the method for making rough things smooth. Metal, stone, glass, wood, or plastic all require logical
progressive procedures to accomplish this task. There is no simple "one step" way to go from rough to smooth, regardless of the material.
The methods, and choice of finishing supplies should
always be based on three factors: the
hardness of any given material, the initial
roughness of the surface and the
degree of final finish desired.
SC procedures
always involve several steps/phases. First, a
cut down phase to remove all the raised bumps, pits or defects on a surface. Aggressive cutting action is required here. For SW SS material, carbide burs in a rotary tool are most effective for this. The second step, is the
smoothing phase, this removes deep scratches and waves caused by the first phase and should leave surfaces with an even plane. Diamond coated burs (points) are inexpensive and are great for this task. There are also many composite abrasive wheels and points that serve well for this purpose. The final phase is
polishing, whereby a high shine is achieved, showing no scratches, pits or waviness. There are many composition wheels and polishing compounds to accomplish this phase.
Employing the proper finishing supply for each phase is imperative. It is a costly mistake to use less than adequate supplies for each phase. For instance; you would not initially use fine grit sandpaper to smooth a block of rough sawn wood. Well, you could, but it would take a ream of sand paper and month of Sundays to get the job done! The same is true with metal. "Bristle discs" are great for smoothing and wire wheels produce great final effects but neither supply was designed to cut down rough surfaces. It will be a frustrating waste of time and material to try this.
Yes, this is labor intensive work! But if you understand the basic principals of surface conditioning the task can be made less onerous and accomplished efficiently.
Now go out and let it SHINE.
-G