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<p>[QUOTE=&quot;lrbguy, post: 3103886, member: 88829&quot;]You did notice this at the Surrey Nanosystems description of Vantablack S-VIS, didn&#039;t you:&nbsp; &quot;The fine nanometre-sized optical cavities that make Vantablack S-VIS so dark mean it cannot be used in environments open to direct contact and mechanical abrasion. It needs to be protected from accidental touching, for example behind or inside a component, or situated where contact is avoided.&quot;&nbsp; If this is to be used as a background, how do you suspend your coin without putting the background in jeopardy?&nbsp; </p><p><br /></p><p>BTW I have been having a lot of luck with black velvet and a clean toothbrush.&nbsp; The coin lies directly on the velvet and even sinks into the fabric a bit for total background isolation - no shadowing.&nbsp; The fabric lies on a metal plate which is used for positioning.&nbsp; The surface is brushed between removal and repositioning of the coin.&nbsp; Very consistent and reliable.[/QUOTE]</p><p><br /></p>

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