chainplates
If you are going to sand SS you will want to pickle it before the final buffing, the sanding will bring out ferous metal and rust if exposed to saltwater. Pickling paste, availible through most welding suppliers, is a acid that will remove the ferous metal. Make sure to follow the instructions for application and removing as it is a strong acid. SS flat bar is availible in multiple grades to get away from too mush finish work. Another alternative is silicon bronze which is also sold in flat bar stock. If you are in the NW check out Alaskan Copper and Brass.
regards
T Scott
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