(This post was last modified: 05-20-2018, 02:16 AM by pvsampson.)
(05-19-2018, 09:33 PM)Razor Emporium Wrote: (05-18-2018, 10:19 PM)SharpnShiny Wrote: What’s the difference between tumbled and brushed finish?
Tumbled is the Parts rubbing against media and a burnishing action occurs. It’s helpful with deburring and smoothing out the metal uniformly. Gives a satin to semi gloss finish to all parts. A true mirror finish is hard to achieve through tumbling alone.
Brushed is manually brushing the parts against an abrasive paper or wheel. Think a Scotch bright pad. It will leave fine lines that will form a pattern. it can’t get into fine areas but Is good for flat surfaces.
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Tumbling to a high polish is possible,not exactly harder to achieve,just different media and much more time consuming.The initial tumbling needs to be spot on so as to have the product ready for high polish.
I use lapidary equipment to make small knife like items from single pieces of stone.One minute less prep in the initial polishing stages can have a major affect on the final outcome.The same principals apply as when working metal.Start with low grit and work up to higher,personally I finish on 14,000 for most pieces before Tin Oxide.
So....if tumbling/polishing at say 1,200 grit is not done correctly,then there will be imperfections showing right through the process to final polish at 14,000.You cannot polish out a 1,200 scratch with 14,000.The difficulty is in the time factor of the preparation.
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