"Morning" Colored Titanium Pin

E. Douglas Wunder colors titanium with electricity to design his "Morning" pin.

That's Clever! : Episode HCLVR-339 -- More Projects »
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Steps 8-9
8. Put on a face shield and file, sand and buff the parts on a buffing wheel using 400-grit paste, then rinse with soap and water.

9. Sandblast the parts. Wear a dust mask and face shield when sandblasting.